英音听力讲解:美国12岁男孩挥舞假枪被警察击毙

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1.They subsequently managed to identify, follow and strike the perpetrators of these senseless murders.

manage to 设法、努力（完成某事）

We managed to squeak through the match.
我们终于设法险胜了这场比赛。

He managed to muddle through university.
他设法混过了大学这一关。

2. Police in the U.S. city of Cleveland have shot and killed a 12-year-old boy in a playground who's been waving around what turned out to be a fake gun.

turn out to be 结果是；原来是

The building he was lodged in turned out to be a church.
原来，他租住的那栋建筑是一座教堂。

It didn't rain, which turned out to be a stroke of luck.
天没下雨，结果成了件幸事。