The kinds of diseases of the turnout zone are multifarious.
道岔区内病害形式多种多样。
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The guard rail plays an im po rtant role of ensuring the vehicle passing through the turnout zone successfully .
护轨对确保车辆顺利通过道岔起着重要的作用。
Meanwhile, the Obama campaign's turnout effort flooded the zone.
CNN: Analysis: Obama won with a better ground game
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