decelerate v. ( 使 ) 減速＝slowdown
【類】decelerate:speed＝enervate:vitality
＝retrench:expense＝attenuate:force
減少速度＝削弱活力＝節省開支＝減弱力量

【記】de向下，celer速度→減速；參考︰accelerate ( v.加速 )