Chelatomery
螯合测定法
🗣️ 情景例句
We have to go pick up Michelle.
我们得去接 Michelle了。
First think, and then speak.
先想后说。
But they would not listen to him. When they came to the river, a white man was waiting in the boat for them.
但是他们不听，当他们来到江边时，一个白人正在船上等着他们。