🗣️ 情景例句
Are you a citizen of the People's Republic of China?
你是中华人民共和国的公民吗？
I must play my spare time well, or I end up doing nothing.
我必须善于利用空闲的时间，否则生命将会在无所事事中告终。
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中，我们可以了解到地球内部的许多情况。