有害

吸烟有害健康。

xī yān yǒu hài jiàn kāng。

Smoking affects your health.

它对你的眼睛有害。

tā duì nǐ de yǎn jing yǒu hài。

It's really bad for your eyes.

不要忘记吸烟对你的健康有害。

bù yào wàng jì xī yān duì nǐ de jiàn kāng yǒu hài。

Don't forget smoking is bad for your health.