Pentachlorization
五氯化作用
🗣️ 情景例句
This afternoon we're going to visit a friend in the hospital.
今天下午我们将去探望一位住院的朋友。
Old wood is best to burn, old horse to ride.
老柴好烧，老马好骑。
The demand for our products has kept rising.
要求定购我们产品的人越来越多。