/ɪkˈstend ||; ɪkˈstɛnd/verb1 [T] to make sth longer or larger (in space or time) 使（在空间或时间上）延长或扩大: Could you extend your visit for a few days? 你此行可不可以延长几天？We're planning to extend the back of the house to give us more space. 为了地方大一点，我们打算把后屋扩建一下。Since my injury I can't extend this leg fully (= make it completely straight). 我受伤以后这条腿伸不直。
2 [I] to cover the area or period of time mentioned （指面积或时间）延伸，延续: The desert extends over a huge area of the country. 沙漠延伸到这个国家的大片地区。The company is planning to extend its operations into Asia. 公司计划把业务扩展到亚洲。
3 [T] (formal 正式) to offer sth to sb 予以；给予: to extend hospitality/a warm welcome/an invitation to sb 给予某人友好款待／热烈欢迎／邀请