Medder
abbr. minimal effective dose 最小有效剂量
🗣️ 情景例句
They are not personal or private.
并不是私人的问题。
The doctor advised me to get plenty of exercise.
医生建议我多锻练。
Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.
地球周围温暖的大气层和望远镜散出的热量使得我们根本不可能找到比行星更小的物体。