Praecribrum
[医] 前穿质
🗣️ 情景例句
Can you spot me a 20?
你能借我二十元吗？
No practice, no gain in one's wit.
吃一堑，长一智。
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，