ORGAN 器官, [C] the organ inside your head that controls how you think, feel, and move

脑，大脑:

Messages from the brain are carried by the central nervous system.

大脑发出的信息是通过中枢神经系统传递的。

the chemistry of the brain

大脑的化学性质

the human brain

人脑

Emotional responses are a function of the right hemisphere of the brain.

情绪反应是右脑的一项功能。

She died of a brain tumour .

她死于脑瘤。

INTELLIGENCE 智力 [C usually plural, U] the ability to think clearly and learn quickly 智力，智慧，头脑，脑筋:

If you had any brains, you'd know what I meant.

如果你有点脑子，你就会知道我的意思。

The job requires brains.

这工作需要动脑筋。

Something's addled your brains (=made you confused) .

什么事让你脑子糊涂了吧。

Come on, use your brain , John.

来吧，动动脑子，约翰。

PERSON 人, [C usually plural] [informal] someone who is intelligent, with good ideas and useful skills

极聪明的人，智者:

Some of our best brains are leaving the country to work in the US.

我们当中一些最优秀的人才离境到美国工作。

FOOD 食物, [U] also brains [pl.] the brain of an animal, used as food

〔供食用的〕动物脑髓

have sth on the brain, [informal] to be always thinking about something

一直想着某事物，牵挂着某事物:

I've got that song on the brain today.

今天我脑子里一直想着那首歌。

be the brains behind / of sth, to be the person who thought of and developed a particular plan, system, or organization, especially a successful one

是某事的幕后策划者（智囊）:

Danny's definitely the brains of the project.

丹尼肯定是这个项目的幕后策划者。

brain dead

brain box, [BrE informal] a very intelligent person

智商高的人，极聪明的人

to hit someone very hard on the head – used humorously

重击〔某人〕的头部〔幽默用法〕:

I wanted to brain him.

我真想把他脑袋打开花。