acceleration /ɪkˌsɛləˈreɪʃən/ noun Learner's definition of ACCELERATION
1
: the act or process of moving faster or happening more quickly : the act or process of accelerating加速;提速 [noncount]
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The car delivers quick/rapid acceleration.这辆车加速很快。
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The car has good acceleration. [=the car is able to accelerate quickly]这辆车能迅速提速。
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There has been some acceleration in economic growth.经济增长速度有所加快。
[singular]
2
[noncount] physics : the rate at which the speed of a moving object changes over time加速度