Cd50
[医] 半数治愈量
🗣️ 情景例句
If I've ever been sure of anything, I'm sure of this; your team is going to lose the same game on Saturday.
这一次我十分肯定：你们队星期六的比赛会输。
Knowledge advances by steps not by leaps.
知识的获得是循序渐进而不是突飞猛进的。
Later, for its personal safety and practical needs,
慢慢地，由于自身安全和实际需要，