Polybromide
多溴化合物
🗣️ 情景例句
Don't worry, everything will work out in the end.
别担心，到最后一切都会顺利成功的。
It is as well to know which way the wind blows.
识时务者为俊杰。
Man-made satellites have been sent up into space by many countries.
许多国家都成功地把人造卫星送入了太空。