adj. 1.官能的，机能的。 2.在起作用的；职务上的。 3.【数学】函数的。 4.【建筑】从使用的观点设计[构成]的。 5.有多种用途的；可改变用途的。 6.可使用的，可操作的。 n. -ism 【心、建】机能主义〔心理学上指思想和行动的过程，是人的整个机体的反应；建筑学上指讲求实用，而不注重外观〕。 n. -ist 机能主义者。 adv. -ly
designed for or capable of a particular function or use; "a style of writing in which every word is functional"; "functional architecture"
involving or affecting function rather than physiology; "functional deafness"
relating to or based on function especially as opposed to structure; "the problem now is not a constitutional one; it is a functional one"; "delegates elected on a functional rather than a geographical basis"
(of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes" 同义词：running, operative, working,
designed for or adapted to a function or use; "functional education selects knowledge that is concrete and usable rather than abstract and theoretical"; "functional architecture"
fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order" 同义词：usable, useable, operable, operational,
Generally, functional refers to something able to fulfill its purpose or function.
例句与用法
1.
The coxa is the functional base of the leg . 基节是腿的功能基础。
2.
The functional response will level off . 机能反应会平稳下来。
3.
The organo functional groups will react with the resin . 有机官能团将与树脂反应。
4.
The functional perfection of its design is quite amazing . 它的机能之完美，真是神奇。
5.
Functional relationships permeate every part of science . 函数关系渗透自然科学的每个部分。
6.
Haldeman's chilly discipline here was functional . 霍尔德曼的严酷无情的纪律在这儿起了作用。
7.
Wound contraction can produce serious functional impairment . 伤口收缩能造成严重的功能障碍。
8.
I am hardly functional if i do not get eight hours' sleep ! 我要是不睡上八个小时就无法工作！
9.
The nephron is the structural and functional unit of the kidney . 肾单位是肾脏的结构和功能单位。
10.
We shall take a closer look at the concept of functional dependence . 我们将周密地考虑一下函数相关的概念。
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