Yóulí lǜ shì yǐnyòng shuǐ xiāodú de cháng yòng shǒuduàn.
Free chlorine is a common method for disinfecting drinking water.
Tips
usage
游离 has two main uses: in chemistry it means 'free' or 'unbound' (as in 游离氯, free chlorine); in everyday language it describes a person or mind wandering or becoming detached from something.