.
.
.
.
.
.
.
.
.
.
virus
Bìng
vaccinate
JIĒ Zhòng
be infected
gǎnrǎn
.
.
This is the whiteboard
time(s)
isolate
gÉ lÍ
.
.
.
.
.
.
.
.
.
.
.
.
.
.