Polychlorobiphenyl
多氯联苯
🗣️ 情景例句
That might be sooner than you think.
那也许比你想像的要快。
It seems he's weak.
看起来他好像很虚弱。
When I returned form abroad recently, a particularly officious young Customs Officer clearly regarded me as a smuggler.
最近一次，我也出国归来，碰上一位特别好管闲事的年轻海关官员，他显然把我当成走私犯。