Ed50
[医] 半数有效量
🗣️ 情景例句
Do you think the clothing industry has bright future?
你觉得服装行业前景好吗？
Pride goeth before, and shame cometh after.
骄傲一开始，耻辱接踵至。
Could you explain exactly what you do?
您能确切的解释一下你做些什么吗？