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harmful

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Water is not an effective shield against the sun's more harmful rays.(水不能有效阻挡太阳中更有害的射线。)
Though drones can be harmful, they can be very helpful.(尽管无人机可能有害，但它们也可能非常有用。)
Dirty air and water are harmful.(肮脏的空气和水是有害的。)
Loud noise is harmful to the inner ear.(噪音对内耳有害。)
Her book raised awareness of the harmful effects of chemicals on the world's lakes.(她的书提高了人们对于化学物质对世界湖泊的有害影响的认识。)
Wearing the wrong glasses, however, can prove harmful.(然而，戴错眼镜可能是有害的。)
Unfortunately, the cheap alternatives are even more harmful than the illicit drugs they replace.(不幸的是，这些廉价的替代品比它们所替代的非法药物更有害。)
If a product is harmful to people's health, it should be withdrawn from sale immediately.(如果一个产品对人们的健康有害，应当立即停止销售这一产品。)
The natural enzyme is harmful to humans and animals.(天然酶对人和动物都是有害的。)
It is evident that smoking is harmful to health.(显而易见，吸烟有害健康。)

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