彼の頭脳の働きは活発だった。の英語

The functions of his brain were very active.

he worked at the frontier of brain science

He has a sharp mind.

This invention is a child of his brain.

He has a good head on his shoulders.

He has an acute head.

He's more of an intellectual type.

he gets his brains from his father's side

He has a pregnant head.

He has a nimble mind.

he's got plenty of brains but no common sense

His head was in a whirl.

Two heads are better than one.

His brain teems with ideas.

His mind must be addled.

His head was severed from his body

He thinks straight whenever he gets into a tight situation.

He has a head for mathematics.

The loss of his sense of smell was due to a head injury.

He has an empty head.

My head began to throb (with pain).

He drove me batty.

He shook his head back and forth.

He doesn't have enough brains to do sums in his head.

He isn't smart enough to add up numbers in his head.

He's not smart enough to add numbers in his head.

He was grown senile recently.

He had grown senile recently.

His head is addled―He is addle-headed―addle-pated―addle-brained―muddle-headed.

he got a bang on the head