n.  脑，大脑

n.  智力，智慧，头脑，脑筋

n.  极聪明的人，人才

v.  重击〔某人〕的头部〔幽默用法〕

• brain tissue/cell  脑组织/脑细胞

• damage to the brain  脑部损伤

• be the brains behind/of sth 

  是某事的策划者[智囊，中枢人物]

• brain dead  脑死亡的；不会动脑子的，愚蠢的

• have sth on the brain 

  某事萦绕心头；过分热衷

• From such instruction, many students began to see themselves as agents of their own brain development. 刺激大脑发育的动因

• Declining mental function is often seen as a problem of old age, but certain aspects of brain function actually begin their decline in young adulthood, a new study suggests.

  大脑的某些功能开始退化

• If you had any brains, you’d know what I meant. 你如果有点脑子，就会知道我的意思。

• Something’s addled your brains.

  什么事让你脑子糊涂了吧。

• Come on, use your brain, John.

  拜托，动动脑筋，约翰。

• I wanted to brain him.

  我真想把他脑袋打开花。

• He's always been the brains of the family.

  这家人数他聪明。

• I’ve got that song on the brain today.

  今天我脑子里一直想着那首歌。