The old tree was blown down in a gale.

这棵老树被强风吹倒。

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The tree was blown down when we saw it.

我们看到那棵树时，它已经被吹倒了。

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That big tree was blown down by the wind.

那棵大树被风刮倒了。

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In London a woman was knocked unconscious after a hoarding was blown down at West Hampstead railway station.

BBC: Rain and high winds battering UK

Some trees were blown down and there was heavy rain, but no widespread damage.

WSJ: Worst storms over in East, South but more coming

Was it really the Lord Protector's head that was rammed on a pike in Whitehall, to discourage regicides, only to be blown down in a gale and swiped by a soldier?

ECONOMIST: Oliver Cromwell