Eyewitnesses spoke of rocks and shards of glass flying in the air.

目击者们提到了在空中飞舞的石子和玻璃碎片。

《柯林斯英汉双解大词典》

They watched as the train smashed into the Grand Am, crushing it into half its original size and sending metal shards flying.

他们看着火车压过汽车，将它压成两半，金属碎片飞起来。

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In a military context, such shards flying around inside a bunker are a definite plus from the attackers' point of view, but obviously not from the defenders'.

ECONOMIST: Bunker-busting

But it didn't keep potentially lethal shards from flying into the stands.

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