Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
How often do you go running?
你多久跑步锻炼一次？
One should not run with the hare and hunt with the hounds.
不应两面讨好。
It seems that there is a big waste pipe coming down from the town. Do you see it, over there?
好象有一条很粗的废水管从镇上通到海里。您看见了吗？在那边？