Planoconvex
[医] 平凸的
🗣️ 情景例句
No, it's Ok.
不用， 没有关系 。
And trade terminology in English is helpful in actual business negotiations.
对于实际的商务谈判是非常有用的。
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.
如果你要寄信到不同时区的国外办公室，你可以发个传真，即使办公室不开门，信也会被收到。