I closed my heart off emotionally.

我就对感情关上了心门。

youdao

As the last beats in the heart monitor trailed　off, I knew Lyra had left my life forever.

当心脏监测器上的最后一次跳动逐渐停止时，我知道莱拉已经永远离开了我的生活。

youdao

She broke his heart when she called off the engagement.

她取消婚约使他为之心碎。

《牛津词典》

The heat burns off a small amount of heart muscle.

VOA: special.2010.03.02

He wrote once that, "The chief thing is to know your duties and our edicts by heart and not put off things until tomorrow, like his son did.

他曾经这样写道,"最要紧的事就是牢记我们的职责和法令,并且不把今天能做的事拖延到明天去做",他儿子就是这么拖沓的

耶鲁公开课 - 欧洲文明课程节选

Larry Scott now uses a wheel chair. He put off going to the hospital after a heart attack because he was worried about money.

VOA: standard.2010.04.18

No player took that mantra to heart this off-season more than pitcher Daniel Herrera.

WSJ: The New York Lumberjacks: Mets Definitely Don't Have a Facial Hair Ban

Shackleton was aiming to circumnavigate the Antarctic continent when he died of a heart attack off South Georgia in 1922.

BBC: Stone returned to Ernest Shackleton's grave after 75 years

These days, Dead Heart Bloom feeds off the city's energy and Brooklyn's bustling music scene, and stores this for later use in the studio.

NPR: Dead Heart Bloom: 'Flash In A Bottle'