AAA is a localized widening and weakening of the abdominal aorta, and primarily affects elderly Caucasian men who smoke, have high blood pressure and high cholesterol levels.

AAA可引起腹主动脉的局部扩张和弱化，其主要影响人群为吸烟的，有高血压和高胆固醇水平的老年高加索人。

youdao

A rupture of the aorta is likely to be fatal.

主动脉的破裂可能是致命的。

youdao

He recalls a mother in her late 20s who came to him because she had an inoperable defect in her aorta that would rupture at some undeterminable time in the future, killing her instantly.

他提起这样一位母亲：将近30岁的她来求助，因为在她的一条主动脉上存在着某种缺陷（inoperable defect 。 译者很迷茫），所以主动脉会在将来的某个不确定的时间爆裂，这会使得她当场死亡。

youdao

Last Friday he suffered a torn aorta, a large artery that carries blood from the heart to the body.

VOA: special.2010.12.18

It will simulate the hidden injuries, ones that involve a torn aorta, a bruised kidney or a brain jostled inside a skull.

FORBES: Magazine Article

In an abdominal aortic aneurism, the aorta swells like a balloon.

FORBES: Magazine Article

Dr Mark Waller, the club's doctor, said the manager's chest pain had been caused by a dissection of the descending aorta.

BBC: Gerard Houllier