Achromat
[化] 消色差透镜\\n[医] 消色差透镜
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
She will be happy to speak in French or Chinese to any of you.
她会很高兴与你们中的某个人讲法语或中文。
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管"，给他们正在使用的机器提供压缩空气。