harmful crack有害裂缝
potentially harmful潜在的有害;潜在有害;有害
extremely harmful极其有害的;十分有害
damaging harmful有损害的
Harmful effects不良影响;有害效应;损害效应
harmful radiation有害辐射
Harmful Advertising伤害性广告
harmful nitrogen[化学] 有害氮
Harmful algae有害藻类的;有害赤潮藻
ADJ（形容词） Something that is harmful has a bad effect on something else, especially on a person's health. (尤指对健康) 有害的
...the harmful effects of smoking.
…吸烟的危害。