Pentachlorization
五氯化作用
🗣️ 情景例句
Is this bus going to Dallas?
这车开往达拉斯吗？
I would like to present our comments in the following order.
我希望能依照以下的顺序提出我们的看法。
Draw your chair up to the table.
把你的椅子拉到桌子旁边来。