lessen['lesən]vt.1.■减少,使变小,使缩小,使减轻:to lessen production costs降低生产成本to lessen the tension减少压力2.■[古语]轻视,藐视;贬低;抹杀:to lessen a person's feat抹杀某人的功绩vi.1.■减少;变小;缩小;减轻:The difference between the city and the countryside lessens gradualy.城乡差别逐渐缩小。conj.1.■[美国方言] 除非(=unless)
lessenlessen[ˈlesn]vt.1.■缩小, 减少; 减轻2.■贬低; 轻视