He will require surgery on his left knee.

他的左膝需要做手术。

《牛津词典》

He does, however, have his problems: cataracts in both of his eyes that blur his vision and, says his mother, require urgent surgery that the family can't afford.

他确实很快乐，但是他有他的问题：他双眼白内障使他的视野变得模糊，需要紧急的手术，但是手术的费用是这个家庭支付不起的，他的母亲说。

youdao

He does, however, have his problems: cataracts in both of his eyes that blur his vision and, says his mother, require urgent surgery that the family can't afford.

他确实很快乐，但是他有他的问题：他双眼白内障使他的视野变得模糊，需要紧急的手术，但是手术的费用是这个家庭支付不起的，他的母亲说。

youdao