Eccc
[医][=element concentration calibration curve]元素浓度校正曲线
🗣️ 情景例句
because, Danny,
因为Danny，
We shall never have friends if we expect to find them without fault.
指望朋友无缺点，永远休想交朋友。
If I work in the garden, I have to sit down and rest every five minutes.
如果我在花园里干活，每5分钟就得坐下来休息。