Shí / yàn / shì / de / fèi / yè / bì / xū / fēn / lèi / shōu / jí / zài / jiāo / gěi / zhuān / yè / rén / yuán / chǔ / lǐ

实验室的废液必须分类收集，再交给专业人员处理。

The laboratory's waste liquids must be collected separately and then handled by professionals.