After all, the Madrid bombs in 2004 had been detonated with mobile telephones, while Mr Khyam and his plotters also planned to use a remote-controlled device.

毕竟，2004年马德里爆炸是用手机引爆，而Khyam先生和他的策划者们也计划使用遥控装置。

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In some cases, remote controlled machines are used to remove the bombs.

VOA: special.2010.05.03

Investigators believe the bombs were detonated using controls from remote-control model cars, two U.S. officials said.

WSJ: Bomb Suspect Was Put on Two Watch Lists

The previous day, a law enforcement official said at least one of the bombs that exploded was set off by remote control.

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