Arctan
反正切
🗣️ 情景例句
I can't thank you enough.
怎样谢你都不过分。
Mr. Jones can read French pretty well.
琼斯先生读法语相当好。
I won't charge you this time.But you'd better not do it again!
这次我就不罚你款了。但你最好不要再开得这样快。