unleash
/ʌnˈli:ʃ; ʌn`liʃ/ v[Tn, Tn.pr]
~ sth (against/on sb/sth)
(a) set sth free from a leash or restraint 解开带子或去掉限制以放开（某事物）
unleash the guard dogs 解开带子放出警卫犬.
(b) (fig 比喻) set sth free from control; release sth in a powerful attack (on sb/sth) 使某物不受控制; 放出某物对（某人[某物]）进行强有力的攻击
unleash the forces of nuclear power 发出核动力的攻击力
He unleashed a torrent of abuse againstthe unfortunate shop assistant. 他对那倒霉的店员骂不绝口.