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Check the connection of the main earthing bar to the earthing rail of the Powerbloc.
检查主接地排和接地排是否可靠连接；
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Rail passes are available through the ticket agent at the main station.
跟车站的售票员可以买到火车票。
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Rail passes are available through the ticket agent at the main station.
跟车站的售票员可以买到火车票。
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