Ballscrew
滚珠丝杠
🗣️ 情景例句
I thank you.
我也感谢你。
A life without a purpose is a ship without a rudder.
人生无目的，犹如船失去了舵。
They devise hundreds of competitions which will enable us to win huge sums of money.
他们设计数以百计的竞赛，竞赛中有人可赢得巨额奖金。