Apectomy
(牙)根尖切除术
🗣️ 情景例句
I guess we must.
我想咱们是该开始了。
What are you going to do now?
现在你要做什么？
easily obtainable from the lunar rocks in the form of liquid oxygen.
从月球上的岩石中很容易提炼出液态氧，