Retropulsion
n. 后退\\n[医] 后退, 后退步态, 后冲步态
🗣️ 情景例句
They are eager to learn English.
他们急着要学英语。
The napkin is dirty, Would you bring me a clean one, please?
这餐厅是脏的，请你拿个干净的给我。
He collected tetters and made copies of people's diaries.
他收集到一些信件，复印了一些人的日记。