n (1)界限，边界，范围(farthest point or place;boundary;area within a boundary)[C]：mark the～s of one's estate 标出某人的地产界限;His reputation extends far beyond the～s of this country.他的名声远扬国外。narrow down/outgrow the～s 缩小/超出范围;within legal/narrow～s 在法律许可/狭小的范围内;within/outside (of) the city～s 在市区范围内/以外;within its territorial～s 在其领土范围内;within a～of 20 miles/a 20-mile～在20英里范围内;

(2)限度，极限(largest or smallest extent，degree，number，etc)[C]：Everything has its～.事物都有限度。work to/learn the～s of one's ability 竭尽全力工作/了解自己能力的限度;reach the～of one's patience/one's resources 到了忍无可忍/山穷水尽的地步;go beyond the～超过限度(过分);to the very～达到顶(极)点;within the～s of one's authority/one's powers 在自己的权限内;There is a～to everything/my patience.凡事都有个限度/我的耐心是有限度的。

(3)限制(restriction)[C]：place/put/set a～(up)on the number of visitors/on the expending 限制参观者的人数/开支;drive under/disregard/exceed the speed～不超速开车/无视速度限制/超出速度限制;a time/a weight～时间/重量限制;an age～ 年龄限制;If only the banks would lend money without～!但愿银行能无限制地贷款!

(4)无法忍受的人或事(person or thing that can not be tolerated)[C]：That man's the～!那个人真让人无法忍受!

off limits (AmE)不准入内;off～s to women 女宾止步;The bar was put off～s to all military personnel. 这家酒吧不准军人入内。

have/know (no) limits 有(没有)限度：His energy seems to have no～s.他好像有无限的精力。His ambition knows no～s.他的野心无止境。

within limits 适度地，有限度地：He is willing to help us，within～s. 他愿意有限度地帮助我们。

vt限制(定)(set a limit or restriction to)[T+n，T+n+prep(to)]：～military expenditure/land development/the amount of time 限制军费开支/土地开发/时间;Membership is not～ed by sex.会员资格不受性别限制。The membership was～ed to 500. 会员人数限定为500人。Speeches were～ed 15 minutes each. 每人发言限定为15分钟。Our holidays are～ed to two weeks a year.我们的假期限定为每年两周。This problem is not～ed to China.这个问题不仅局限于中国。〖同〗restrict;

→′limited adj 有限的，较少(小)的;′limiting adj 限制(性)的;͵limi′tation n 限制;局限(性);′limitless adj 无限的