01

今日长难句

The public health risk could become high if this virus exploits the opportunity to establish itself as a human pathogen and spreads to groups at higher risk of severe disease such as young children and immunosuppressed persons.

02

词汇解析

virus [ˈvaɪrəs] n. 病毒

exploit [ɪkˈsplɔɪt, ˈeksplɔɪt] v. 利用

establish [ɪˈstæblɪʃ] v. 建立，确立

pathogen [ˈpæθədʒən] n. 病原体

severe disease 严重疾病

immunosuppress [ɪmjunoʊsəˈpres] v. 抑制免疫（句中加ed，可理解为adj，意为 “免疫功能不全的，免疫抑制的”）

03

结构分析

✔句子主干：

The public health risk could become high

✔状语从句：

if this virus exploits the opportunity to establish itself as a human pathogen and spreads to groups at higher risk of severe disease

同位语（举例）：

such as young children and immunosuppressed persons

04

参考译文

The public health risk could become high if this virus exploits the opportunity to establish itself as a human pathogen and spreads to groups at higher risk of severe disease such as young children and immunosuppressed persons.

如果这一病毒利用机会确立自己作为人类病原体的地位 / 有机会成为人类病原体，并向幼儿和免疫抑制者等患严重疾病风险较高的群体传播，那么公共卫生风险可能会变得很高。