He denied that he'd failed to keep a proper lookout that night.

他否认那天晚上他未能小心警戒。

《柯林斯英汉双解大词典》

But the master of the Bowbelle dredger Captain Douglas Henderson was tried twice for failing to maintain a proper lookout.

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"Although the error may have been one which many might make, it amounted to a significant failure to keep a proper lookout and to manage the car correctly, " Lord Justice Hughes said.

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