Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
You don't seem very enthusiastic about his suggestion.
你似乎对于他的建议并不很感兴趣。
That's a good idea.
好主意。
Good idea! When shall we meet?
好主意！我们什么时候会面？