hazardous substances短语²³¹⁰⁸ 基本例句 有害物质 The RoHS rules ban products containing any more than trace amounts of lead, mercury, cadmium and other hazardous substances, including some nasty materials called brominated flame- retardantsBFRs. 《有害物质限制条例》禁止产品含有超过微量的铅、汞、镉和其它有害物质，包括一些被称为溴化物阻燃剂的有害物质。 cri