Substract
vt. 减去
🗣️ 情景例句
When I first graduated from college.
那时我刚从大学毕业。
Just lately I've caugth up to my works.
最近我的工作忙死了。
This is done by a great number of ring-shaped air jets on the bottom of the craft.
船底装上大量环状喷气嘴以实现这一目的。