Embryoscope
[医] 胚胎发育观察器
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
What do you do for relaxation?
你做什么消遣？
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。