Backstraps
n. 书背，书脊；(靴子或鞋后跟上的)提带
🗣️ 情景例句
Our pleasure.
非常荣幸。
Idle people (folks) have the most labour (take the most pains).
懒人做工作，越懒越费力。
He's already a little weak in Chinese.
他的中文已经有点儿弱了。