shí / yàn / shì / lǐ / wǒ / men / yòng / sān / lǜ / huà / tiě / jiǎn / yàn / shuǐ / zhōng / de / fēn / lèi / wù / zhì

实验室里，我们用三氯化铁检验水中的酚类物质。

In the laboratory, we use ferric chloride to test for phenolic compounds in water.