A roller bearing
滚柱轴承
🧩 词语组成解析
🗣️ 情景例句
together in a more scheduled way.
能更定时在一起。
My watch is fast and your watch is slow.
我的表快，而你的表慢。
Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.
因为蛇有毒液不是用来对付人的，而是对付它的猎物，诸如鼠类，毒液对这些猎物会立刻起作用。