Selene
[医] 月形
🗣️ 情景例句
First round's on me.
第一轮我请客。
Know something like the palm of one's hand.
熟知其事，了如指掌。
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管"，给他们正在使用的机器提供压缩空气。