Maximum permissible dose(mpd)
[化] 最大容许剂量
🧩 词语组成解析
🗣️ 情景例句
kick off your shoes, and sit down.
脱掉你的鞋子， 坐下来。
I have come to make sure that your stay in Beijing is a pleasant one.
我特地为你们安排使你们在北京的逗留愉快。
No, she didn't hurt herself. She was all right.
没有，她没有摔伤。她没事。