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step up

经济 ضاعف   ؛زاد   ؛طرح
 英语 词库
step-up ['stepʌp]
军队 In land operations, a procedure by which control is passed from an organization to an element of that organization which has been sent to a new location in order to maintain continuity of control during relocations of that organization
step-up
: 7 短语, 6 学科
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