Ppt.
[医] 沉淀[物], 制备的, 精制的
🗣️ 情景例句
Do you get the message?
明白我的意思没有？
Bye! Have a good day.
再见！请慢走！
The winch was again put into operation and one of the men started up the truck.
绞盘机再次启动，一位工人发动了急修车的引擎。