Scientific fields can be divided in another way - into pure and applied science.

可以用另一种方式把科学领域分为：纯粹科学和运用科学。

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Sometimes it is difficult to tell pure science from applied science.

有时很难区分理论科学和应用科学。

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Sometimes it is difficult to tell pure science from applied science.

有时很难区分理论科学和应用科学。

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