Vacuum phototube
[电] 真空光电管
🧩 词语组成解析
n. 光电管\\n[医] 光电管
🗣️ 情景例句
There is an emergency. Please send a fire engine.
这有火灾，请尽快派消防车来。
It is no use crying over spilt milk.
泼水难收。
That's very late.Can the dentist see me now?
那就太晚了。牙科医生现在就不能给我看一下吗？