And, along with physical activity, food quality is just as important as quantity, he says.

而且他说，与身体锻炼一样，食物的质量和数量同样重要。

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Straw mulching improved the quantity of soil microbe and activity of soil microbe.

秸秆覆盖增加了梨园土壤微生物的数量，增强土壤微生物活性。

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Objective To isolate and purify collagenase with high quantity and activity.

目的分离获得高产量、高比活性的胶原酶。

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Most of us appreciate this new ease in exploring the vast quantity of data on the Internet (and the vast quantity of activity generated by our friends).

FORBES: How Flickr Has Made It Easier To Out Pervs

Monetarists are willfully blind to the latter reality, and presume that money of indeterminate and volatile value (and rising quantity) actually boosts economic activity.

FORBES: The Comical, Central Planning Fantasy That Is 'Market' Monetarism