Many studies show that social support revs up the immune system, and helps prevent colds.

大量的研究已经证明社会帮扶能增强人体的免疫力，有助于预防感冒。

youdao

Many studies show that social support revs up the immune system, and helps prevent colds.

大量的研究已经证明社会帮扶能增强人体的免疫力，有助于预防感冒。

youdao