Eccc
[医][=element concentration calibration curve]元素浓度校正曲线
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
I'm a new employee.I was hired yesterday.
我是昨天被雇用的新雇员。
She felt worried. She wanted to get ready for her party.
她有点儿着急。她要为自己的聚会作好准备。