6 sentences

1. 病毒正在扩散。

   bìng​dú zhèng​zài kuò​sàn.

   The virus is spreading.

   Source: OpenSubtitles

2. 这种病毒在人群中迅速扩散。

   zhè zhǒng bìng​dú zài rén​qún zhōng xùn​sù kuò​sàn.

   The virus is spreading rapidly among the population.

   Source: Dong Chinese Dictionary

3. 许多国家签署了不扩散核武器条约。

   xǔ​duō guó​jiā qiān​shǔ le bù kuò​sàn hé​wǔ​qì tiáo​yuē.

   Many countries have signed the Treaty on the Non-Proliferation of Nuclear Weapons.

   Source: Dong Chinese Dictionary

4. 政府已经封锁了该疫区以防止病毒扩散。

   zhèng​fǔ yǐ​jīng fēng​suǒ le gāi yì​qū yǐ fáng​zhǐ bìng​dú kuò​sàn.

   The government has locked down the affected area to prevent the virus from spreading.

   Source: Dong Chinese Dictionary

5. 这种新药可以有效控制艾滋病毒的扩散。

   zhè zhǒng xīn yào kě​yǐ yǒu​xiào kòng​zhì ài​zī bìng dú de kuò​sàn.

   This new drug can effectively control the spread of HIV.

   Source: Dong Chinese Dictionary

6. 检查结果显示这是一种局限性的炎症，并没有扩散。

   jiǎn​chá jié​guǒ xiǎn​shì zhè shì yī zhǒng jú​xiàn​xìng de yán​zhèng, bìng méi​yǒu kuò​sàn.

   The test results show that it is a localized inflammation and has not spread.

   Source: Dong Chinese Dictionary