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| The tracks are checked according to exacting details. [Photo by Huo Yaping/ha.people.cn] |
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| Engineers carry out repairs to a rail track in Nanyang. [Photo by Huo Yaping/ha.people.cn] |
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| Lubricant is used to maintain the track. [Photo by Huo Yaping/ha.people.cn] |
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| Safety check become necessary as the weather warms up and expands the tracks. [Photo by Huo Yaping/ha.people.cn] |