I feel mentally exhausted.我感到精神疲惫。

To be mentally alert and sharp in your old age, you must remain mentally active throughout your life.要想在年老时仍然思维敏捷, 你必须在一生中都保持思想活跃。

The race is going to be both physically and mentally demanding.赛跑会在体力和心理上都有较高要求。

a man who was profoundly mentally ill一个重度精神病男性患者

a mentally ill prisoner一名精神病囚犯

an inmate who is mentally disturbed一位精神失常的同住者

a drama about a mentally unstable woman关于一位精神不稳定的妇女的戏剧

mentally healthy people精神健康的人

the needs of the mentally ill and the mentally handicapped精神病患者和智障人士的需求

I think students should be able to perform calculations both mentally and with paper and pencil.我认为学生应该既能用笔和纸进行运算也会心算。

This technique will help people mentally organize information.这项技术会帮助人们在脑海里组织信息。