Retropack
n. 制动火箭系统, 减速火箭系统
🗣️ 情景例句
How are you getting on with your studies?
你功课情况如何？
How can you do such a thing?
你怎么能做这种事情呢？
Number 13 buses run much more frequently, don't they?
13路车跑得更勤，是不是？