Wert
vbl.be第2人称的过去式
🗣️ 情景例句
What does John do?
John现在做什么事？
Deliver not your words by number but by weight.
言不在多，而在有物。
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，