有害 yǒu hài destructiveharmfuldamaging Example sentences 他们认为使用手机对大脑有害。 tāmen rènwéi shǐyòng shǒujī duì dànǎo yǒuhài. They think that using a cell phone is harmful to the brain 吸烟对身体健康有害。 xīyān duì shēntǐ jiànkāng yǒuhài. Smoking is harmful to your health