Rackwork
齿条, 齿条加工, 齿条机构
🗣️ 情景例句
You must observe these simple rules.
你必须遵守这些简单的规定。
How do you pronounce it?
这个字怎么念？
Where are you going tomorrow? You said that you hoped it would be fine.
你明天打算去哪儿？你说你希望明天是个好天呢。