Pentachloroethylbenzene
五氯乙基苯
🗣️ 情景例句
No news is good news.
没消息就是好消息。
Old oxen have stiff horns.
牛老角硬。
This is done by a great number of ring-shaped air jets on the bottom of the craft.
船底装上大量环状喷气嘴以实现这一目的。