Microimpurity
[化] 微量杂质
🗣️ 情景例句
And you won't be able to speak for a while.
有一段时间 你们没有办法讲话。
Many happy returns of the day.
祝您长寿。
Look at your clothes! Where have you been?
瞧你们的衣服！你们去哪儿了？