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OXF3000N 
nguyên chất tinh khiết trong lành 
pure
like: trong lành → →
One advantage of/One of the advantages of living in the country is the fresh air. ☊ advantage ☊
Let's go out for some fresh air. ☊ air ☊
clean air ☊ clean ☊
Let's go and get some fresh air (= go outside where the air is cooler). ☊ fresh ☊
During the day it'll become mainly dry with clear skies. ☊ mainly ☊
I'm in need of some fresh air. ☊ need ☊
The air was sweet and pure. ☊ pure ☊
split (within sth): a damaging split within the party leadership ☊ split ☊
worse than doing sth: There's nothing worse than going out in the cold with wet hair. ☊ worse ☊