科学家们不知道有多少噪音以及何种噪音对海洋动物有害。

Scientists do not know how much and what kinds of noises are harmful to ocean animals.

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有一天，我读到了一本名为《慢的崇拜》的书，意识到忙碌不仅有害，还有把生活变成一场无休止的赛跑的危险。

One day, I came across a book called In Praise of Slowness and realized that being busy is not only detrimental, but also has the danger of turning life into an endless race.

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她的神经官能症对化学药品有反应，这让她总是幻想药品对自己有害。

She had a neurosis about chemicals and imagined them everywhere doing her harm.

《柯林斯英汉双解大词典》

Isn't there a kind of logical requirement that for something to be bad for you ? you've got to be around to receive that bad thing?

难道没有这样一种逻辑要求吗,如果有什么事物对你来说有坏处,你不是应该去接受那个有害的事物吗？

耶鲁公开课 - 死亡课程节选

there would be very, very possibly harmful events that will occur if we don't address it soon.

如果我们不尽快解决，很可能有非常非常有害的事情发生。

全球变暖和发达国家 - SpeakingMax英语口语达人

Now there was a time when people thought fat was bad and it didn't-- and people didn't really understand there were different kinds of fat, or they didn't realize that different kinds of fat had different impacts on health.

曾经有段时期,人们认为脂肪是有害的,它不能...,人们当时不知道脂肪还分不同种类,所以就没有意识到,不同的脂肪对人体有不同的影响

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选