1. vi.跳；弹回　 jump or bounce
2. vt.定界限，为…的界限，限制　 mark or form the boundaries or limit

　bound　用作动词作“跳跃”解时，指水平向前地、快速连续地跳跃，强调由此获得的冲力，暗含精神上的轻松与活力之意。

　～ swiftly　迅速地跑跳着
　～ away　跳着跑开
　～ back　（球）弹回
　～ down the hillside　从山坡上滚下来
　～ on　在…接界
　～ on the north by Canada　北边与加拿大接壤
　～ to　与…接界
　～ with joy　（心）因高兴怦怦直跳

　Rubber balls can be made to bound.　可以使橡皮球弹回。
　Her heart bounded when she heard the news.　她听到那消息时，心跳了起来。
　The little horse is bounding.　小马在跳跃。

　The little girl came bounding to meet her mother.　这个小女孩连蹦带跳地来迎接她的妈妈。
　You should bound your desires by reason.　你应以理性来限制你的欲望。
　The teacher asked the students to bound Asia.　老师要学生划出亚洲的边界。
　Canada bounds the United States on the north.　加拿大与美国北部接壤。
　Our ideas are bounded by the experience.　我们的思想受到经验的限制。

 ♣ bound about　(v.+adv.)
　到处跳　jump off here and there
　The dog was bounding about.　那条狗到处乱跳。
 ♣ bound away　(v.+adv.)
　跳跃着离开　move by leaps
　The little boy bounded away.　那个小男孩跳着跑开。
 ♣ bound back　(v.+adv.)
　弹回；跳跃前进　bounce; move by leaps
　The ball struck the wall and bounded back to me.　球碰到墙又向我弹回来。
　Inflation will bound back upwards next year.　明年通货膨胀将重新加剧。
 ♣ bound down¹　(v.+adv.)
　跳下　jump down
　Big rocks were bounding down.　巨石从上面滚下来。
 ♣ bound down²　(v.+prep.)
　沿…滚下　roll down
　The balls were bounding down the step.　球由台阶上滚下来。
 ♣ bound from　(v.+prep.)
　从…跳，从…弹回　bounce from; move by leaps
　Goats can bound from rock to rock.　山羊能从一块石头跳到另一块石头上。
　The ball bounded from the wall.　球从墙上弹回。
 ♣ bound on　(v.+prep.)
　扑向　jump to sb
　The leopard bounded on the prey.　那只豹扑向猎物。
 ♣ bound off　(v.+adv.)
　跳开　jump away
　Goats were bounding off in all directions.　山羊跳着四下逃散。
 ♣ bound up　(v.+prep.)
　跃上　move by leaps
　He bounded up the step with vigour.　他精神十足地跳上一级台阶。
 ♣ bound with　(v.+prep.)
　因…跳动　leap for (some) reason
　Her heart bounded with joy.　她的心高兴得怦怦直跳。

 ♣ bound, hop, jump, leap, skip, spring
　参见jump条。

1. C 跳，跳跃，跃进　 a jump or leap
2. P 界限，范围　 limits

　exceed the ～　超出…范围
　pass the ～　超出…范围
　violent ～　猛跳
　at ～　一跃
　beyond ～　超出…的范围
　by leaps and ～　飞快地
　on ～　在弹起时
　on sb's ～　在某人的宅界
　out of ～　出界，不可能，禁止

　He cleared the wall in one bound.　他一跳就越过了那道墙。
　The king maintained order within the bounds of his realm.　国王在其王国的疆界之内维持着秩序。
　His impudence exceeds all bounds.　他无耻至极。
　There are no bounds to his ambition.　他的野心没有止境。

 ♣ beyond the bounds of
　超出…的范围　exceed the limits
　It is beyond the bounds of human knowledge.　这已超出人类知识的范围。
　What he did went beyond the bounds of law.　他的所作所为已超出了法律允许的范围。
 ♣ in leaps and bounds
　迅速地　very quickly
　Jill's making excellent progress; she's coming along in leaps and bounds.　吉尔进步很快，她正飞快地赶上。
 ♣ know no bounds
　不知限量　can not be limited
　His greed for power knows no bounds.　他的权力欲是无止境的。
 ♣ out of bounds to
　禁止某人入内　(of a place) not to be entered or visited (by sb)
　This place is out of bounds to students and troops.　这个地方禁止学生和军人入内。

 ♣ bound, frontier
　这两个词都指“分界线”。frontier指一个国家邻近另一个国家边境的领土或未开发的地区、领域；bound可指国家、地区等的“边界”，也可指思想领域、法律、科学界等的“界线”“限制”“限制范围”。
 ♣ bounds, border, boundary, limit
　参见border条。
 ♣ bound, confine, limit
　参见limit条。

1. 被捆绑的，被束缚的　 tied together
2. P 一定的，必定的　 certain to do sth
3. P 去，准备去　 going or ready to go in the direction of

　～ up　忙于…，热衷于…
　～ for　开往…
　～ from...to　从…开往…
　～ in duty　有义务必须做
　～ on a journey　在旅行途中
　～ to　被束缚在

　He kicked at the bound prisoner.　他朝那被绑着的囚犯踢了一脚。
　This ship is homeward bound.　这艘船是在归航。
　He was bound by his promise.　他受到自己诺言的约束。
　He is bound by the terms of the contract.　他受到合约条款的约束。
　She is bound to her family.　她被家庭束缚住了。
　The plane is bound for Tokyo.　这架飞机飞往东京。
　Train is bound from Shanghai to Nanjing.　这班火车是从上海开往南京的。
　I do not feel bound to give you everything you want.　我觉得没有义务来满足你要的一切。
　He is bound to succeed in his enterprise.　他在事业上一定会成功。
　He is bound in duty to obey.　他有义务服从。
　We are bound in honor to help the flood victims.　我们在道义上应该帮助水灾受害者。

 ♣ bound up in
　忙于某事的，热衷于某事物的　very busy with sth
　He is bound up in his work with old people.　他专心致志于老年人的工作。
 ♣ bound up with
　与某事物关系密切的　closely connected with sth
　The welfare of the individual is bound up with the welfare of the community.　个人福利与社会的福利有着密切的关系。
 ♣ I'll be bound
　我确信　I feel sure
　He is right, I'll be bound!　我敢肯定他是对的！

　［同义词］ v. leap, jump, spring adj. certain, sure, tied, destined for, on the way
　［反义词］ adj. avoidable, free, unsure