脑力的英文：
mental

intellectual interests, pursuits, etc
需用脑力的爱好、 研究等.

As people grow old, they will decay mentally as well as physically.
人们年老时脑力和体力都会衰退。

Only a small portion of my brain do I employ; only a paltry amount of my muscles do I flex.
脑力、体能稍加开发，就能超过以往的任何成就。

To follow and absorb a newspaper article is a little Bit hard as it requires a high level of mental involvement.
读懂一篇文章比较吃力，因为需要高度的脑力活动。

I use a quick mental checklist each day to help me stay balanced.
我每天使用一种迅速脑力备忘录帮助我保持平衡。

It was their delight, their folly, their anodyne, their intellectual stimulant
这是他们的人生乐趣，他们的一时荒唐，他们的止痛药，他们的脑力刺激剂。

"For me it's a more cerebral and certainly more lucrative form of jogging," he avers
他这样说:“对我来说，这是一种更主要是脑力方面的，更有经济效益的慢跑锻炼。

Now, you must agree that these are indubitable symptoms of insanity."
我想您也得承认，这些无可争辩的事实都是脑力衰弱的象征。”

The ugly truth is that while links posts don’t take a ton of brain power, they do take a ton of time (at least for me).
讨厌的事实却是链接该位置虽然用不了多少脑力，但却要花费了大量的时间（至少对我来说）。

Teach him to sell his brawn and brains to the highest bidder, but never to put a price on his heart and soul
教他可把自己的体力和脑力以最高价出售，但绝对不要出卖自己的心灵和灵魂,教他对暴徒的嚎叫置若罔闻……

His mental decay is distressing.
他的智力衰退令人苦恼。

She is a mental medium.
她是一个巫师。

Such mental conflict was not always uppermost.
这种思想斗争并非时时浮上心头。

Mental skill or adroitness; cleverness.
聪明，伶俐智力上熟练或灵巧；聪明

Ease off mental pressure.
减轻精神负担。