Pnu
[医][=protein nitrogen unit]蛋白氮单位
🗣️ 情景例句
Run it by me again, if you don't mind.
不介意的话，请再说一遍。
At your request, we are offering you the following items. This offer will remain open within 3 days.
应你方要求，我方就如下产品报价，此报价3日内有效。
and you avoid the frustration of arriving at the very moment when the train is drawing out of the station and being unable to get on it.
而且可以避免那种正好在火车驶出站时赶到车站，因上不去车而感到的沮丧。