function as (v.+prep.)
担任,兼起作用fulfil the duty or purpose of
▲function as sth
An attributive noun functions as an adjective.定语性名词起形容词作用。

用作不及物动词
▲S+～(+A)
The phone didn't function at all.这电话根本不能用。
The machine will not function properly if it is not kept well-oiled.机器没有上好油,就不会顺利地运转。

function, operate, work
参见work条。

［同义词］ n. duty, role v. act
［词源］＜古法语＜拉丁语functio(功能)

They have the functions and powers in their hands.他们手里掌握着职权。
The brain performs a very important function; it controls the nervous system of the body.大脑起一种非常重要的作用,它控制着身体的神经系统。
The function of the stomach is to digest food sufficiently to enable it to pass into the intestine.胃的功能是充分消化食物,以便让其进入肠道。
What functions can this machine?这部机器有哪些功能?
In x=5y,x is a function of y.在x=5y中, x是y的函数。
The size of the crop is a function of the quality of the soil and the amount of rainfall.庄稼收获量的多少与土质和雨量有着密切的关系。
He first met her at a social function.他是在一次社交集会上首次遇见她的。

function, action, agency
参见action条。