1、within作副词和介词是在内、在里面、不超过的意思。
2、例句，We recommend that this wine should be consumed within six months. 我们建议该酒在6个月内饮用完毕。
3、Within hours of the tragedy happening, an emergency rescue team had been assembled. 悲剧发生后几小时之内，就集结起来一支紧急救援队伍。
4、within作介词表达心中有某种情感的时候，可以这样说，He's coping much better within himself. 他心里好受多了。
