jack
jackjack[dʒak],jack sth 'in (BrE, informal)1.■to stop doing sth,especially your job结束，放弃(工作等):She decided to jack in her job.她决定辞职。After such a bad day I feel like jacking it all in .如此倒霉的一天下来，我什么都不想干了。[OBJ]job[synonym]chuck sth in/up;pack sth in2.■[NOTE]Jack sth in cannot be used in the passive. jack sth in 不用于被动语态。[G]v+adv+n ◆ v+n/pron+adv,jack 'off (AmE, !, slang)3.■if a man jacks off, he gives himself sexual pleasure by rubbing his sexual organs(男人)行手淫[G]v+adv,jack 'up (slang)4.■to take an illegal drug by putting it into your body using a plastic or glass tube with a long hollow needle (a syringe )注射毒品[G]v+adv,jack sth 'up 5.■to lift sth such as a vehicle off the ground using a special device (a jack )用千斤顶托起(汽车等)[OBJ]car 6.■(informal) to increase the cost or the price of sth提高，增加(成本或价格) :The wholesalers have jacked up their prices.批发商提价了。[OBJ]cost,price[synonym]put sth up;increase sth (more formal)[G]v+adv+n ◆ v+n/pron+adv
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