Polychlorparaffin
多氯化石蜡
🗣️ 情景例句
By the way, will we be able to get a refund on this cancellation?
顺便问一下，我们取消后可拿回定金吗？
He that would command must serve.
欲做先生，先做学生。
'I can't hear a word!' I said angrily.
“我一个字也听不见了！”