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limit2 noun a speed/time/age limit 速度／时间／年龄限制a limit to what we can do 我们做事能力的限度limit ♦︎ line ♦︎ boundary ♦︎ parameter ♦︎ bounds ♦︎ frontier ♦︎ confines ♦︎ borderlineThese are all words for the edge of an area of thought, behaviour or possibility, or the division between one area of thought, etc. and another. 这些词均表示思想、行为或可能性的限度、界限或分界线。PATTERNS AND COLLOCATIONS 句型和搭配◆the line / boundary / borderline between sth and sth else◆beyond the limits / boundaries / parameters / bounds / frontiers / confines of sth◆within the limits / boundaries / parameters / bounds / confines of sth◆outside the limits / parameters / bounds / confines of sth◆at the limits / boundaries / frontiers / borderline of sth◆on the boundary / borderline between / of sth◆to extend the limits / boundaries / parameters / bounds / frontiers of sth◆to set / define / establish the limits / boundaries / parameters / bounds of sth◆to cross the boundary / borderline between / of sth■ limit [countable] the point at which sth stops being possible or existing 限度；极限◆There is a limit to the amount of pain we can bear.我们能忍受的疼痛是有限度的。◆There is no limit to what we can achieve.我们可实现的目标是没有极限的。◆Our finances have been stretched to the limit.我们的财力已经消耗殆尽。◆She pushed me to the limit of my abilities.她把我推到了能力的极限。◆She knew the limits of her power.她知道自己的权限。■ line [countable] the division between one area of thought or behaviour and another （思想或行为的）界限，分界线◆We want to cut across lines of race, sex and religion.我们想超越种族、性别和宗教的界限。◆There is a fine line between showing interest in what someone is doing and interfering in it.关心别人正在做的事情和插手其中之间存在着细微的差别。◆There is no clear dividing line between what is good and what is bad.好事与坏事之间没有明显的分界线。■ boundary / /baʊndri/ / [countable] something that marks the limits or edges of one area of thought or behaviour and/or separates it from another （思想或行为的）边界，界限，分界线◆It is up to the teacher to set the boundary between acceptable and unacceptable behaviour.划清可为与不可为之间的界限是老师的职责。◆Scientists continue to push back the boundaries of human knowledge.科学家不断扩大人类知识的范围。NOTE 辨析 Line or boundary?A line between two areas of thought or behaviour is sth that exists and often needs to be judged carefully. A boundary does not just exist: it has to be decided by sb. * line指两种思想或行为之间现存的、而且经常需要仔细判断的界限；boundary不仅是现存的，而且是必须由某人来规定的界限◆no clear dividing boundary ◆a fine boundary between ◆It is up to the teacher to set the line... Boundary often directs your attention to what lies within the boundaries, which mark the edge of what you are considering: you can push back/extend the boundaries of sth but not◆push back/extend the lines * boundary常把人的注意力引向界限内的东西，这就限定了考虑的范围。可以说push back/extend the boundaries of sth，但不说push back/extend the lines。 ■ parameter / /pəˈræmɪtə(r)/ / [countable, usually plural] (formal) something that marks the limits of what you are considering or how sth can be done 规范；范围◆We need to define the parameters of this debate.我们需要为这次辩论设定规范。◆We had to work within the parameters that had already been established.我们必须在设定的范围内工作。■ bounds / /baʊndz/ / [plural] (rather formal) the accepted or furthest limits of sth 限制范围；极限◆Public spending must be kept within reasonable bounds.公共开支必须控制在合理的范围内。◆It was not beyond the bounds of possibility that they would meet again one day.他们有一天会再度相遇，这不是没有可能。◆His enthusiasm knew no bounds (= was very great).他的热情无比高涨。■ frontier /ˈfrʌntɪə(r); NAmE frʌnˈtɪr/ [countable, usually plural] the limits of what is known about sth or what sb/sth can do 学科的尖端；权力的边缘◆This research programme aims to push back the frontiers of science.本科研项目力争开拓科学前沿。■ confines /ˈkɒnfaɪnz; NAmE ˈkɑːnfaɪnz/ [plural] (formal) a limited amount of space within walls or other barriers; the limits of what is known, allowed or possible in a situation （墙壁等围成的）范围；界限；边界◆He spent three years within the narrow confines of the prison.他在狭小的监狱里度过了三年时间。◆She wanted to experience things outside the close confines of family life.她想体验一些超出家庭小圈子的事情。 see also confine sb/sth to sth ⇨ confine sb/sth to sth NOTE 辨析 Frontiers or confines? Confines emphasizes how little space, knowledge etc. there is; frontiers emphasizes how much knowledge there is and how it is increasing. * confines强调空间或知识等范围的狭窄，frontier强调知识的多少以及如何增长。■ borderline [countable] the division between two qualities or conditions （两种特质或状况之间的）分界线◆The biography sometimes crosses the borderline between fact and fiction.这部传记有时混淆了事实与虚构的分界线。 see also borderline ⇨ vague adj. |