Tetrachlorobisphenol
四氯双酚
🗣️ 情景例句
How much will it be?
要多少钱？
It's about time.
时间差不多了。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。