People should decrease the amount of fat they eat.

人们应减少脂肪的摄入量。

《牛津词典》

The land started to get drier, which in turn caused a huge decrease in the amount of vegetation because vegetation doesn't grow as well in dry soil, right?

土地开始变得干燥，这反过来又导致了植被数量的大量减少，因为植被在干燥的土壤里无法生长得很好，对吧？

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Schools that show a decrease in deliberate destruction of property can receive the amount of money that would be spent on repairs and replacements.

如果校内故意破坏公物的行为减少，那么学校就可以获得用于维修和更换物品的资金。

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The decrease in the amount of dopamine can result in one or more of the general signs of Parkinson's.

VOA: special.2009.02.03

The decrease in the amount of dopamine can result in one or more general signs of Parkinson's disease.

VOA: special.2009.04.07

It aims to decrease the amount of added sugar from many products that children eat.

VOA: special.2010.06.07

Regulators say holding back a small amount of customer cash would decrease the amount of capital that firms would have to hold in reserve and compare the idea to a minimum account balance required by banks.

WSJ: U.S. Sets Money-Market Plan

Zuckerberg said that in the past two months, the Site Integration and Graph Team at Facebook had been focusing on the issue of friend spam to decrease the amount of unwanted requests among the user base.

FORBES: Mark Zuckerberg: 'Friend Request Spam' Down 40%

The idea that a version of HDL cholesterol could actually decrease the amount of plaque in arteries is a big step forward.

FORBES: Defending Esperion