疾病通过老鼠扩散，通过跳蚤传播到人身上，当然在有些病例中，直接通过呼吸传染。

The disease is spread by rats and transmitted to people by fleas or, in some cases, directly by breathing.

youdao

疾病通过老鼠扩散，通过跳蚤传播到人身上，当然在有些病例中，直接通过呼吸传染。

The disease is spread by rats and transmitted to people by fleas or, in some cases, directly by breathing.

youdao