harmful

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柯林斯詞典

harmful /?hɑ?mf?l/

1. ADJ Something that is harmful has a bad effect on something else, especially on a person's health. (尤指對健康) 有害的
...the harmful effects of smoking. …吸菸的危害。

劍橋詞典

It's important to protect your skin from the harmful effects of the sun .
Prolonged use of the drug is known to have harmful side-effects.
The programme makers disagree that seeing violence on television has a harmful effect on children .
Food must be heated to a high temperature to kill harmful bacteria .
We've signed a treaty with neighbouring states to limit emissions of harmful gases .