预防性化学疗法表示着一种方法，一种呼吁，这与儿童免疫类似。

Preventive chemotherapy has an approach, and an appeal, akin to childhood immunization.

youdao

预防性化学疗法表示着一种方法，一种呼吁，这与儿童免疫类似。

Preventive chemotherapy has an approach, and an appeal, akin to childhood immunization.

youdao