Pbb
abbr. 多溴聯苯（polybrominated biphenyl）
??? 情景例句
We'll do that immediately.
我們可以立即跟她談。
They've been divorced.
他們已離婚了。
Economy is one powerful motive for camping, since after the initial outlay upon equipment,
圖省錢是露營的一個主要動機，因為除了開始時購置或是租借一套露營裝備外，