因此，必须及时检测并发现钢轨中存在的裂纹或断裂，确保铁路运输的安全和畅通。

Therefore, rail fractures must be detected in time in order to ensure the safety of rail transportation.

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因此，必须及时检测并发现钢轨中存在的裂纹或断裂，确保铁路运输的安全和畅通。

Therefore, rail fractures must be detected in time in order to ensure the safety of rail transportation.

youdao