Backgear
[机] 后列齿轮
🗣️ 情景例句
No way. I must get everything ready before noon.
不行啊，我必须在中午前把一切都做好。
Do we have to wear the helmets?
我们得戴上防护帽吗？
Many of them have to wait six months for their goods.
许多顾客不得不等上半年才得到所需的商品。