Ballscrew
滚珠丝杠
🗣️ 情景例句
It'll be our secret.
这只是你我之间的秘密。
I wish I could find one just like it.
要是我也能碰到这样一件就好了。
A little. He fell and hit his leg on a table.But he's OK now.
伤了点儿。他跌倒了，腿撞在桌子上。但是现在已经好了。