She is an even tempered wife.

她是个性情平和的妻子。

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I am a very even tempered person and have a positive attitude about life.

我是一个喜欢锻炼的人，对生活充满积极的态度。

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When his headaches developed, Nick became bad-tempered and even violent.

尼克的头疼起来时，他变得焦躁易怒，甚至暴躁。

《柯林斯英汉双解大词典》

Levine could have made the comedy darker and crazier, but the even-tempered, modulated style works well.

NEWYORKER: Playing The Numbers

Since then his even-tempered work in movies like The Bucket List and Wanted have made him a reliable box office draw.

FORBES: Magazine Article

They present Bruce, for the most part, as a sweet, even-tempered young man just another optimistic kid chasing a dream of success.

NEWYORKER: Dragon: The Bruce Lee Story