Impulsor
[数]非共面直线对
🗣️ 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。
He is playing on the merry-go-round in the park.
他正在公园里骑旋木马。
It was Wednesday.
昨天是星期三。