Backstraps
n. 书背，书脊；(靴子或鞋后跟上的)提带
🗣️ 情景例句
Mmm-hmm. That's because he's sleeping.
嗯。那是因为他睡了。
It seems he's weak.
看起来他好像很虚弱。
After crossing the Equator, the captain called in at a port to have a new rudder fitted,
跨越赤道后，船长将船停靠在一个港口，在那儿换了一只舵。