sì lǜ yǐ xī / shì / yī zhǒng / cháng yòng / de / gōng yè / róng jì / xū yào / tuǒ shàn / chǔ lǐ四氯乙烯是一种常用的工业溶剂,需要妥善处理。Tetrachloroethylene is a common industrial solvent that needs proper handling.