You say "pure", but what is the difference between purification and separation?
你刚才说“纯”，提纯和分离有什么不同呢？
What is the difference between an alloy and a pure metal?
合金与纯金属的区别是什么？
The difference between pure linguistics and applied linguistics is more apparent than real.
语言学理论和实用语言学之间的区别是很表面的而非真实存在的。
The difference between Fresh MILK and Pure MILK.
鲜牛奶和纯牛奶的区别?。
The difference between Fresh MILK and Pure MILK.
鲜牛奶和纯牛奶的区别?。
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