Otacousticon
[医] 助听筒
🗣️ 情景例句
He applied to Columbia,
他申请了Columbia大学。
You think I was born yesterday!
我没那么笨！又不是三岁小孩。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。