This group of chemicals is known to be harmful to people with asthma.

已知这类化学品对哮喘病患者有害

Fruit juices can be harmful to children's teeth.

果汁可能损坏儿童的牙齿。

Jogging can be harmful to the health.

慢跑有时候会对身体健康有害。

If money is lost, it will be harmful to society.

如果赔钱，则对社会有害。

An excess of vitamin can be harmful to your health.

服用过量的维他命可能对健康有害。

Can a Drug That Helps Hearts Be Harmful to the Brain?

对心脏病治疗有用的药会对大脑产生损害吗？