Ballscrew
滚珠丝杠
🗣️ 情景例句
Normally I go to bed at about ten o'clock.
通常我在 10:00 睡觉。
Mr. Smith, would you like to start things off?
史密斯先生，你要开始做事了吗？
It's time you went to bed.
你早就该睡觉了。