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请输入您要查询的英文单词:

 

单词 step rate
释义

step rate

noun

: a rate that changes by regular gradations: such as
a
: a life-insurance premium rate that increases or decreases each year
b
: a utilities rate whereby an increase in unit consumption results in a decrease in unit price
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更新时间:2026/6/15 17:52:44