Tfr
[医][=total fertility rate]总生育率
🗣️ 情景例句
My pleasure.
不客气。
Better be the head of the yeomanry than the tail of the gentry.
宁作自由民之首，不为贵族之尾。
His few material possessions make it possible for him to move from place to place with ease.
他几乎没有什么财产，这使他能够轻松自如地在各地奔波。