Tooth(type)coupling
[化] 齿式联轴器
🗣️ 情景例句
The Post Office aims to improve its quality of service.
邮局锐意改善服务质量。
What's your nationality?I'm a native Australian.
我是土生土长的澳大利亚人，你的国籍是什么？
Really? I thought you were from the States.
真的吗？我还以为你是美国人呢。