Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
I type about 40 words per minute.
一分钟我能打40个字。
He that will thrive must rise at five.
五更起床，百事兴旺。
I imagine you're not very interested in politics.
我想你一定对政治不感兴趣。