They could not say with confidence that he would be able to walk again after the accident.

他们不能肯定他经过那场事故后还能行走。

《牛津词典》

He told them he was old and feeble and was not able to walk so far.

他告诉他们自己年老体弱，不能走那么远。

《柯林斯英汉双解大词典》

The child was not able to speak, walk properly or control bodily functions.

这个孩子不能说话，不能正常行走或控制大小便。

《柯林斯英汉双解大词典》

They will also occasionally walk themselves into corners and not be able to figure a way out.

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Giffords is able to stand with assistance, but is not yet able to take steps or walk, said Rhee, adding that therapists are helping Giffords with ways to express her thoughts and, eventually, speak.

CNN: Giffords arrives in Houston

The study of a sustained release oral formulation of the synthetic form of prostacylin showed that patients treated for pulmonary arterial hypertension did not achieve a statistically significant improvement in how far they were able to walk within six minutes by week 16 of the trial.

FORBES: Pharma News: United Therapeutics, Zogenix, Par Pharmaceuticals