Chelon
螯合剂
🗣️ 情景例句
How many karats do you want?
你要几克拉的？
The fox changes his skin but not his habit.
狐狸可以改变皮毛，但不能改变习性。
Suppose every sensor gives perfectly accurate readings of temperature,
再假定每个传感器都极端准确地读出了温度、