Oleorefractometer
油折射计
🗣️ 情景例句
Good morning, sir. May I help you?
早安，先生。能为您服务吗？
Looking back, it seems like a very short five years living here and working together with you.
回顾一下，在这里和大家一起工作的五年看起来是那么短暂。
Hi, Kate. What's wrong?
哎，凯特，怎么了？