detrimental

形容词 detrimental:

1. (sometimes followed by `to') causing harm or injury
   同义词：damaging, prejudicial, prejudicious

1. Lack of sleep is detrimental to one's health.
   缺乏睡眠有害健康。
2. Something useless, detrimental, or worthless, especially an animal unfit for breeding.
   废物无用的、有害的或无价值的东西，尤指不适于配种的动物
3. Smoking is detrimental to health.
   吸烟封健康是有害的。