美[fa?n?de??n] 1 . She dug the foundation with a pick and shovel.
她用鎬和平鍬挖地基。
來自柯林斯例句
2 . I am determined to build on this solid foundation .
我決定在這個堅實的基礎之上繼續努力。
來自柯林斯例句
3 . The Bush Foundation has funded a variety of faculty development programs.
布什基金會已經資助了許多教員發展項目。
來自柯林斯例句
4 . The issue strikes at the very foundation of our community. 這個問題嚴重影響了我們社會的基本根基。來自柯林斯例句5. The Foundation is holding a dinner in honour of something or other.
基金會正舉辦某個紀念宴會。
來自柯林斯例句
1.the basis on which something is grounded;
there is little foundation for his objections
2.an institution supported by an endowment
3.the fundamental assumptions from which something is begun or developed or calculated or explained;
the whole argument rested on a basis of conjecture
4.lowest support of a structure;
it was built on a base of solid rock
5.education or instruction in the fundamentals of a field of knowledge;
he lacks the foundation necessary for advanced study
6.a woman's undergarment worn to give shape to the contours of the body
7.the act of starting something for the first time; introducing something new;
she looked forward to her initiation as an adult
Foundation類層次 Foundation類層次的根是NSObject類，它（和NSObject及NSCopying協議一起）定義了基本的對象屬性和行為。 Foundation框架的剩余部分由幾組相互關聯的類和一些獨立的類組成。有一些代表基本數據類型的類，如字符串、字節數組、用于存儲其它對象的集合類；一些代表系統信息的類，如日期類；還有一些代表系統實體的類，比如端口、線程、和進程。圖1、圖2、和圖3所示的類層次描述了這些類的邏輯分組及其繼承關系。 Fo
