A person may be in good physical condition but have a cold or be mentally ill.

一个人可能身体情况很好，但可能有感冒或心理异常。

youdao

My name's Jerry Cooper and everybody says I must be mentally ill when I talk about my relatives.

我的名字叫杰瑞·库柏，大家都说只要我说起我的亲戚们，我就肯定是疯了。

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He is mentally ill and cannot be held responsible for his actions.

他有精神病，不能对自己的行为负责。

《牛津词典》

Vice Chief of Staff, General Peter Chiarelli,said military personnel must be more aggressive in getting treatment for mentally ill soldiers.

VOA: standard.2009.12.25

During cross-examination by Michael Fitton QC, prosecuting, Dr Rogers said he did not believe Farrow to be mentally ill.

BBC: Stephen Farrow murder trial: Accused's 'rape fantasies'

He is on hunger strike and wants to be allowed to die, but is being force fed because he is considered to be mentally ill.

BBC: New date set for Moors Murderer Ian Brady's tribunal

Prosecutors say that Yates may be mentally ill, but she knew right from wrong when she killed her five children, and therefore is not legally insane.

CNN: Andrea Yates case: Expert says children suffered 'slow death'