Helophilus
[医] 棘蝇属
🗣️ 情景例句
He's busy preparing for class.
他忙着准备功课。
Be careful whom you appoint to the position of manager.
你该当心你所任命的那个经理。
international standards of water treatment are usually followed at bottling plants.
装瓶厂通常遵循国际水处理的标准。