/wɪ'ðɪn; wɪð`ɪn/
prep
1 (a) after not more than (the specified period of time) 不超过（某段时间）; 在（某段时间）之内
*She returned within an hour. 她不到一小时就回来了.
* If you don't hear anything within seven days, phone again. 你要是在七天之内听不到任何消息就再打个电话.
(b) ~ sth (of sth) not further than (the specified distance) (from sth) 不超过（某段距离）; 在（某段距离）之内
*a house within a mile of the station 距火车站不到一英里的一所房子
* The village has three pubs within a hundred metres (of each other). 这个村子里有三个酒馆, （相互）距离都在一百米以内.
2 inside the range or limits of (sb/sth) 在（某人[某事物]）的范围或限度以内
*We are now within sight of (ie able to see) the shore. 我们现在的距离能看见海岸了.
* There is a bell within the patient's reach, ie which the patient can reach. 在病人伸手可够得着的地方有个电铃.
* He finds it hard to live within his income, ie without spending more than he earns. 他觉得有些入不敷出.
* I'd prefer you to keep this information within the family, ie known only by members of the family. 我希望你只让家人知道这件事.
* within the limits of my modest talents 管窥所及.
3 (fml 文) inside (sth) 在（某事物）之内
*within the medieval walls of the city 在该城中世纪建造的城墙以内
* Interview everyone living within the area shown on the map. 面见地图所示区内居住的每一个人.

adv (fml 文) inside 在内部; 到内部
*Shop assistant required. Apply within. 招聘店员. 请进面洽.

prep, adv
[Language: Old English;Origin: withinnan]
a) before a certain period of time has passed
　We should have the test results back within 24 hours.
　He fell sick and died within a matter of weeks.
　Within an hour of our arrival Caroline was starting to complain.
b) during a certain period of time
　the enormous success of televised sport within the last twenty years
　Within the space of a year, three of the town's factories have closed down.
less than a certain distance from a particular place
　The invading troops came within 50 miles of Paris.
　Within a five mile radius of Ollerton there are several pubs and restaurants.
　We live within easy reach of (=close to) the shops.
　Adjust the driver's seat so that all the controls are within reach (=close enough to touch) .
within sight/earshot (of sth)
(=close enough to see or hear)
　As she came within sight of the house, she saw two men getting out of a car.
inside a particular building or area
≠ outside
　Prisoners who died were buried within the walls of the prison.
　public footpaths within the national park
　The rooms within were richly furnished.
apply/enquire within
(=used on notices on the outside of buildings)
　Baby rabbits for sale. Enquire within.
inside a society, organization, or group of people
≠ outside
　There have been a lot of changes within the department since I joined.
　an attempt to reform the system from within
if something stays within a particular limit or set of rules, it does not go beyond that limit
　We have to operate within a very tight budget.
　Private security firms have to work strictly within the law.
　You can go anywhere you want within reason (=within reasonable limits) .
literary or formal inside a person's body or mind
≠ outside
　Elaine felt a pain deep within her.
　I'm feeling more relaxed within myself.