Electrostethophone
电扩音听诊器
🗣️ 情景例句
We needed the money.
我们当时需要钱。
I got caught in traffic, otherwise I would have been here sooner.
我遇到交通阻塞，否则我很快就到这了。
and then generalized the results of his many experiments into the famous law of free fall.
然后将多次实验结果概括成著名的自由落体定律的人。