What makes a road broad?

什么可以让路变宽呢？

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The devices will be placed at Western Bank, Eyre Street, Prince of Wales Road, Attercliffe Centre, Asline Road and Broad Lane.

BBC: Traffic pollution tested across Sheffield

This attack took place on a main road in broad daylight, Renee.

NPR: Video Released of Kidnapped American Reporter

Along either side of the road lay broad swathes of landmines and a double fence of barbed wire that stretches the 151-mile (248 km) length of the DMZ.

CNN: Bush peers into 'evil' North Korea