Siman
[医]去氧安定（弱安定药）
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
The camera is out of order.
这照相机出毛病了。
How long have you lived there?
你在那里住多久了？