Only 12 weeks ago he underwent major heart transplant surgery.

仅仅12周之前，他接受了一次心脏移植的大手术。

《柯林斯英汉双解大词典》

He underwent a major heart surgery several years ago.

几年前他心脏动了一次大手术。

youdao

LONDON - British doctors designed a radical solution to save a girl with major heart problems in 1995: they implanted a donor heart directly onto her own failing heart.

英国伦敦的医生们在1995年对一个患有严重心脏病的女孩设计了治疗方案并进行了心脏移植手术。

youdao

A new study has found the strongest evidence yet that smoke-free laws can reduce a major effect of tobacco smoking - heart disease.

VOA: special.2009.01.07

Chronic diseases have a major role in the healthcare costs, so if you look at these chronic diseases, heart disease, stroke, cancer and Diabetes we find that seven out of ten of all deaths are now due to chronic diseases, whereas, it was a very small fraction in 1900.

慢性疾病是医保费用中的一个大头,你看看这些慢性疾病,心脏病,中风,癌症和糖尿病,就会发现如今十分之七的死亡,都是源于慢性疾病,然而,这在1900年仅占很小一部分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So, many people have relatives they know of that have had to have their heart imaged -- heart disease is a major problem in the United States, and there's a good chance that they had Cardiolite given to them to help in that imaging process.

它被用在心脏成像中,很多人都有一些亲戚他们-,必须要做心脏成像，心脏病已经是美国的一个主要问题,而很有可能他们就要用到Cardiolite来成像。

麻省理工公开课 - 化学原理课程节选

Two years later, his luck--and his health--were tested when he was forced to undergo a major heart operation.

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It did seem to reduce the risk of major heart attacks, but at the expense of major bleeding problems.

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Three years later, she had a major heart attack and they were forced to give her that surgery that she needed.

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