Echosounder
[医]超声探测器
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
I'm from out of town.
我从城外面来。
We found it difficult to work with him.
我们发现和他共事很难。