Pbb
abbr. 多溴联苯（polybrominated biphenyl）
🗣️ 情景例句
Hail to the conquering heroes,
向进取的英雄们致敬，
The only feasting I do these days is in my dream.
这几天我只能在梦中享受山珍海味了。
No one noticed the boy as he crept off.
当男孩从船里爬出来时，谁也没有发现他。