Enraged by the restive child's behavior, the man unleashed a vicious dog.Unleash 一词最早出现于17世纪70年代，由前缀 un- （相反动作、取消、除去）+ leash （用皮带等系住、缚住、牵住狗、鹰等动物，作名词指“拴狗的皮带、链条”）构成，其本义即“解皮带放开”，比如：被这犟孩子的行为激怒后，该男子解带放开了一条恶狗。

He unleashed an onslaught against the capital within days.从这个概念出发， unleash 很自然地就被用来引申指“突然释放、放纵……发出、使爆发”，多指突然使强大或暴力的力量、情绪、活动或群体等释放出来或者变得不受约束，比如：几天之内，他就向首都发起了猛攻。

The full force of the grumpy old man's rage was unleashed against me.那个脾气暴躁的老人把所有的怒气都发泄在我身上。

To deliver on the two centenary goals, realize the Chinese Dream of national rejuvenation, and steadily improve our people’s lives, we must continue to pursue development as the Party’s top priority in governance; we must unleash and develop productive forces, continue reforms to develop the socialist market economy, and promote sustained and sound economic growth.权威用例实现“两个一百年”奋斗目标、实现中华民族伟大复兴的中国梦，不断提高人民生活水平，必须坚定不移把发展作为党执政兴国的第一要务，坚持解放和发展社会生产力，坚持社会主义市场经济改革方向，推动经济持续健康发展。

Secure a Decisive Victory in Building a Moderately Prosperous Society in All Respects and Strive for the Great Success of Socialism with Chinese Characteristics for a New Era ） 。出自十九大报告《决胜全面建成小康社会 夺取新时代中国特色社会主义伟大胜利》（

release: allow or enable to escape from confinement; set free untether: release or free from a tether unshackle: release from shackles, chains, or other physical restraints同近义词