Eem
[医][=emission electron microscope]发射式电子显微镜
🗣️ 情景例句
When was it built?
它是什么时候建造的？
A great ship asks deep waters.
大船要走深水，蛟龙要在海中游。
In the afternoon, classes are over at 3:30, and I get home at about 4:00.
下午三点半下课，我大概四点到家。