If you cut the iron wire with a knife, you'll blunt its edge.

如果你用刀砍铁丝，会使刀锋变钝的。

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The evening show, inspired by the dark and twisted fairytales of the brothers Grimm, is a 45-minute, adrenaline-raising performance with a lot of knife throwing, motorcycle stunts and daredevil high-wire feats to keep you on the edge of your seat.

BBC: London��s winter wonderland