词典释义：
释义
v.
[no obj.]become smaller or fewer in size, amount, intensity, or degree
减少，减小，减弱，降低
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the population of the area has decreased radically .该地区的人口急速下降。
[with obj.]make smaller or fewer in size, amount, intensity, or degree
使减少，使减小，使减弱，使降低
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the aisles were decreased in height .通道的高度减低了。
n.
an instance or example of becoming smaller or fewer
减小，减少
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a decrease in births .出生人口减少。
[mass noun]the action or process of becoming smaller or fewer
减小（或减少）过程
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the rate of decrease became greater .减慢的速率加大了。
短语
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on the decrease becoming less common or widespread； decreasing 在衰减中；在减少中
词源
"late Middle English： from Old French
