His arteries were blocked up again, requiring him to undergo repeat surgery.

他的动脉再次栓塞，需要再做一次同样的外科手术。

《柯林斯英汉双解大词典》

Bleeding from the ovary or pelvic vessels. Any bleeding is usually mild, rarely requiring transfusion or surgery.

卵巢或盆腔的血管出血。通常出血很少，罕见病人要输血或做手术。

youdao

Cech's true feelings are hard to discern, as he has no memory of the horrific collision that left him requiring brain surgery, and he is yet to speak about the incident.

很难断定切赫的真实感受，因为自从接受脑部手术，他对那次可怕的冲撞没有任何记忆，对那次意外他也没有进行任何评论。

youdao

The most severe cases requiring joint replacement surgery.

VOA: standard.2010.08.11

Infections can be fairly mild, like a rash with blisters, or they can become severe abscesses requiring surgery and months of antibiotics to cure.

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In 2001, patients requiring elective surgery could wait as long as 18 months for an operation.

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Then, in September, Burlew sliced his thumb open on a piece of broken glass, severing tendons and requiring emergency surgery.

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