锻炼可以增强身体的免疫力。

Duànliàn kěyǐ zēngqiáng shēntǐ de miǎnlì.

Exercise can enhance the body's immunity.

充足的睡眠有助于维持免疫系统健康。

Chōngzú de shuìmián yǒuzhù yú wéichí miǎnyì xìtǒng jiànkāng.

Adequate sleep helps maintain a healthy immune system.

这种疫苗可以提高免疫力，预防疾病。

Zhè zhǒng yìmiáo kěyǐ tígāo miǎnlì lì, yùfáng jíbìng.

This vaccine can boost immunity and prevent diseases.