The following information may help to resolve the situation:
The following packages have unmet dependencies:
Remove the following packages:
1) blur-effect [1.1.2+r17 (now)]
2) dde-api [3.1.22-1 (now)]
3) dde-calendar [1.2.2-1 (now)]
4) dde-control-center [4.4.4-2 (now)]
5) dde-control-center-plugin-notify [4.4.4-2 (now)]
6) dde-control-center-plugin-weather [4.4.4-2 (now)]
7) dde-daemon [3.2.13-1 (now)]
8) dde-desktop [4.4.8.3-2 (now)]
9) dde-disk-mount-plugin [4.4.8.3-2 (now)]
10) dde-dock [4.6.3-2 (now)]
11) dde-file-manager [4.4.8.3-2 (now)]
12) dde-launcher [4.3.2-1 (now)]
13) dde-polkit-agent [0.2.1-1 (now)]
14) dde-qt5integration [0.2.10-1 (now)]
15) dde-session-ui [4.3.7-1 (now)]
16) dde-trash-plugin [4.4.8.3-2 (now)]
17) deepin-appstore [4.0.12-1 (now)]
18) deepin-calculator [1.0.2-1 (now)]
19) deepin-deb-installer [1.2.4-1 (now)]
20) deepin-font-installer [1.0.4-1 (now)]
21) deepin-image-viewer [1.2.18-1 (now)]
22) deepin-manual [1.0.6-1 (now)]
23) deepin-menu [3.3.2-1 (now)]
24) deepin-metacity [3.22.15-1 (now)]
25) deepin-music [3.1.8.1-1 (now)]
26) deepin-mutter [3.20.29-1 (now)]
27) deepin-notifications [3.2.2-1 (now)]
28) deepin-qml-widgets [2.3.6-5 (now)]
29) deepin-repair-tools [1.0.6-1 (now)]
30) deepin-screenshot [4.0.11-1 (now)]
31) deepin-shortcut-viewer [1.3.4-1 (now)]
32) deepin-system-monitor [1.4.3-1 (now)]
33) deepin-terminal [2.9.2+r23~fe3d3f5 (now)]
34) deepin-voice-recorder [1.3.6.1-1 (now)]
35) gstreamer1.0-plugins-bad [1.12.3-2 (now)]
36) libdde-file-manager [4.4.8.3-2 (now)]
37) libdeepin-mutter0g [3.20.29-1 (now)]
38) libdrm-dev [2.4.99-1 (now)]
39) libdtkwidget2 [2.0.7.2-1 (now)]
40) libdtkwm2 [2.0.7-7 (now)]
41) libegl-mesa0 [19.1.4-1 (now)]
42) libegl1 [1.1.0-1~bpo9+1 (now, stretch-backports)]
43) libqt5libqgtk2 [5.6.1+dfsg-13deepin (now)]
44) libsensors-config [1:3.5.0-3 (now)]
45) libsensors5 [1:3.5.0-3 (now)]
46) libwayland-egl1-mesa [19.1.4-1 (now)]
47) mesa-common-dev [19.1.4-1 (now)]
48) mpv [0.27.0-2+b2 (now)]
49) python3-dae [1.0.2+r2~a4bf2bd.b3 (now)]
50) python3-pyqt5 [5.6+dfsg-1 (now)]
51) python3-pyqt5.qtquick [5.6+dfsg-1 (now)]
52) python3-pyqt5.qtwebkit [5.6+dfsg-1 (now)]
53) qt5dxcb-plugin [1.1.8.4-1 (now)]
54) startdde [3.1.27-1 (now)]
Install the following packages:
55) libllvm6.0 [1:6.0-1~bpo9+1 (stretch-backports)]
56) libsensors4 [1:3.4.0-4 (now, oldstable)]
57) policykit-1-gnome [0.105-6 (oldstable)]
58) qt5-gtk-platformtheme [5.7.1+dfsg-3+deb9u1 (oldstable)]
Upgrade the following packages:
59) libjavascriptcoregtk-4.0-18 [2.18.3-1 (now) -> 2.18.6-1~deb9u1 (oldstab
60) libqt5core5a [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldstab
61) libqt5dbus5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldstabl
62) libqt5designer5 [5.6.1-4 (now) -> 5.7.1-1 (oldstable)]
63) libqt5gui5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldstable
64) libqt5multimedia5 [5.6.1-2 (now) -> 5.7.1~20161021-2 (oldstable)]
65) libqt5multimedia5-plugins [5.6.1-2 (now) -> 5.7.1~20161021-2 (oldstable
66) libqt5network5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldst
67) libqt5opengl5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldsta
68) libqt5printsupport5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (
69) libqt5qml5 [5.6.1-11 (now) -> 5.7.1-2+b2 (oldstable)]
70) libqt5quick5 [5.6.1-11 (now) -> 5.7.1-2+b2 (oldstable)]
71) libqt5quickwidgets5 [5.6.1-11 (now) -> 5.7.1-2+b2 (oldstable)]
72) libqt5sql5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldstable
73) libqt5sql5-sqlite [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (ol
74) libqt5svg5 [5.6.1-2 (now) -> 5.7.1~20161021-2+b2 (oldstable)]
75) libqt5webkit5 [5.6.1+dfsg-5 (now) -> 5.7.1+dfsg-1 (oldstable)]
76) libqt5widgets5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldst
77) libqt5xml5 [5.6.1+dfsg-13deepin (now) -> 5.7.1+dfsg-3+deb9u1 (oldstable
78) libwebkit2gtk-4.0-37 [2.18.3-1 (now) -> 2.18.6-1~deb9u1 (oldstable)]
79) qml-module-qtgraphicaleffects [5.6.1-3 (now) -> 5.7.1~20161021-3 (oldst
80) qml-module-qtquick-controls [5.6.1-3 (now) -> 5.7.1~20161021-2 (oldstab
81) qml-module-qtquick-layouts [5.6.1-3 (now) -> 5.7.1-2+b2 (oldstable)]
82) qml-module-qtquick-window2 [5.6.1-11 (now) -> 5.7.1-2+b2 (oldstable)]
83) qml-module-qtquick2 [5.6.1-11 (now) -> 5.7.1-2+b2 (oldstable)]
Downgrade the following packages:
84) libc-bin [2.28-10 (now) -> 2.24-11+deb9u1 (oldstable)]
85) libc6 [2.28-10 (now) -> 2.24-11+deb9u4 (oldstable)]
86) libcogl-pango20 [1.22.5-1 (now) -> 1.22.2-2 (oldstable)]
87) libcogl-path20 [1.22.5-1 (now) -> 1.22.2-2 (oldstable)]
88) libcogl20 [1.22.5-1 (now) -> 1.22.2-2 (oldstable)]
89) libdrm-amdgpu1 [2.4.99-1 (now) -> 2.4.95-1~bpo9+1 (stretch-backports)]
90) libegl1-mesa [19.1.4-1 (now) -> 13.0.6-1+b2 (oldstable)]
91) libgbm1 [19.1.4-1 (now) -> 13.0.6-1+b2 (oldstable)]
92) libgl1-mesa-dri [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backports)]
93) libglapi-mesa [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backports)]
94) libglx-mesa0 [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backports)]
95) libgstreamer-plugins-bad1.0-0 [1.12.3-2 (now) -> 1.10.4-1 (oldstable)]
96) libpython-stdlib [2.7.14-1 (now) -> 2.7.13-2 (oldstable)]
97) libpython2.7 [2.7.14-2 (now) -> 2.7.13-2+deb9u3 (oldstable)]
98) libpython2.7-minimal [2.7.14-2 (now) -> 2.7.13-2+deb9u3 (oldstable)]
99) libpython2.7-stdlib [2.7.14-2 (now) -> 2.7.13-2+deb9u3 (oldstable)]
100) libqt5xdgiconloader2 [2.0.0-8 (now) -> 2.0.0-5 (oldstable)]
101) locales [2.28-10 (now) -> 2.24-11+deb9u1 (oldstable)]
102) mesa-va-drivers [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backports)]
103) mesa-vdpau-drivers [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backport
104) mesa-vulkan-drivers [19.1.4-1 (now) -> 18.2.8-2~bpo9+1 (stretch-backpor
105) python [2.7.14-1 (now) -> 2.7.13-2 (oldstable)]
106) python-minimal [2.7.14-1 (now) -> 2.7.13-2 (oldstable)]
107) python2.7 [2.7.14-2 (now) -> 2.7.13-2+deb9u3 (oldstable)]
108) python2.7-minimal [2.7.14-2 (now) -> 2.7.13-2+deb9u3 (oldstable)]
Leave the following dependencies unresolved:
109) youtube-dl recommends mpv | mplayer
110) libreoffice-avmedia-backend-gstreamer recommends gstreamer1.0-plugins-b
111) deepin-screenshot recommends deepin-shortcut-viewer
112) dde-control-center recommends dde-control-center-plugin-notify
113) dde-control-center recommends dde-control-center-plugin-weather
114) dde-dock recommends dde-disk-mount-plugin
115) dde-dock recommends dde-trash-plugin