Underseas
adv. 在海底, 在海面下
✅ 同义词
🗣️ 情景例句
Take care, and have a nice flight.
请保重！祝你一路顺风！
When one is about to act, one must reason first.
凡事要先思而后行。
He appears to be your friend but I doubt if he is.
他看上去像是你的朋友，但我怀疑他是否是真心的。