Polychlorinated
[医]多氯化的
🗣️ 情景例句
Are we scheduled to leave on time?
飞机准时起飞吗？
Not getting the job was a terrible disap-pointment.
得不到那份工作，叫人失望极了。
You'd better go to bed earlier tonight, if you can.
如果可能，你今晚最好早点儿睡觉。