旱灾危害农作物。

Hànzāi wēihài nóngzuòwù.

Droughts damage crops.

吸烟危害健康。

Xīyān wēihài jiànkāng.

Smoking is harmful to your health.

长期暴露在污染的环境中会对身体造成危害。

Chángqī bàolù zài wūrǎn de huánjìng zhōng huì duì shēntǐ zàochéng wēihài.

Long-term exposure to polluted environment can be harmful to the body.