Bridge roadways, edge girders and arches must be blasted so that they are broken at vital points.
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bridge roadways
桥梁道路
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The spine splits and splays from one shore along the central void position, diverging under the road decks to the outside of the roadways at the other end of the bridge.
脊椎从一岸边沿着中空的地方并行伸出，在路面平台下岔开伸向桥的另一端道路以外。
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