Slipcases
(slipcase 的复数) n. 书套
🗣️ 情景例句
What made you change your job so frequently?
为什么你经常转工？
I don't know how to work the machine.
我不懂得怎样使这部机器运转。
but rarely with bicycles made for two.
不过双人自行车则不容易看到。