Hydronaut
n. <美>(海军中从事水下搜索、救生或科研工作的)深水潜航器工作人员,深水潜航器驾驶员
🗣️ 情景例句
Would you kindly hold these keys, please?
请帮我拿一下钥匙。
Fill it up with regular, please.
请加满普通汽油。
That's why I didn't see the sign.
所以我才没看见那牌子。