harmful

the harmful effects of smoking.吸烟的害处

harmful gas有害气体

harmful effect不良影响；有害效应

harmful bacteria有害细菌；病菌

harmful substance有害物质

harmful chemicals有害化合物

harmful factor有害因素

harmful interference有害干扰

真题例句...and its harmful effects on productivity are well documented...第三套CET42014.12阅读理解

真题例句...Sugar is far more harmful to health than fat and salt...第一套CET42014.12阅读理解

真题例句...Attracting numbers of birds continually to the same spot can be harmful to them...CET42009.6听力题