1 sentence

1. 在处理放射源时，必须严格遵守安全规程。

   zài chǔ​lǐ fàng​shè​yuán shí, bì​xū yán​gé zūn​shǒu ān​quán guī​chéng.

   Safety regulations must be strictly followed when handling radioactive sources.

   Source: Dong Chinese Dictionary