2 sentences

1. 中国每十年进行一次全国人口普查。

   Zhōng​guó měi shí nián jìn​xíng yī cì quán guó rén​kǒu pǔ​chá.

   China conducts a national population census every ten years.

   Source: Dong Chinese Dictionary

2. 医疗机构在社区开展了免费的癌症普查。

   yī​liáo jī​gòu zài shè​qū kāi​zhǎn le miǎn​fèi de ái​zhèng pǔ​chá.

   Medical institutions carried out free cancer screenings in the community.

   Source: Dong Chinese Dictionary