Pbb
abbr. 多溴联苯（polybrominated biphenyl）
🗣️ 情景例句
I keep thinking about that bag of film. Eight rolls.
我一直在想着旅行袋的事。一共有八卷呢。
Excuse me? I didn't hear what you said.
对不起，我没有听清你说的话。
Yes, it's empty. Look!
是的，你看，是空的。