Take a spare tyre along in case of need.
带只备用轮胎去,以备不时之需。
I need a spare tyre for the tractor.
这辆拖拉机我还需要一个备胎。
I keep a spare tyre in the back of the car.
我把备用轮胎放在车后面。
Have you got a spare tyre in your car?
你的汽车上有备用轮胎吗?
But as we age our brown fat largely disappears and gets replaced by 「bad」 white fat, which typically sits as a spare tyre around the waist.
但随着我们年龄的增加,棕色脂肪渐渐消失,而取而代之的是坏的白色脂肪,最典型的特点是腰部有一圈多余的轮胎状脂肪。