Impulsor
[数]非共面直线对
🗣️ 情景例句
I majored in economic and trade English.
我主修的是经贸英语。
The poet creates pictures with words.
诗人用语言创造万物。
It has been said that everyone lives by selling something.
据说每个人都靠出售某种东西来维持生活。