1 sentence

1. 没有证据表明疲惫或弱免疫系统导致癌症。

   méi​yǒu zhèng​jù biǎo​míng pí​bèi huò ruò miǎn​yì​xì​tǒng dǎo​zhì ái​zhèng.

   There is no evidence that exhaustion or a weak immune system causes cancer.

   Source: CCMatrix