求翻译：　△每队替补队员2人。替换时需经裁判员 Referee验明资格，并于检录登舟前替换完毕，登舟后不得替换是什么意思？

△ each team substitutes. Replacement is required by the referee referee verification of qualifications, and replacement is completed in front of the roll call Dengzhou shall not be replaced after Deng Zhou

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△ each team substitutes the member 2 people.When replace must verify the qualifications after referee Referee, and in sports official who calls up athletes in their turn ascends in front of the boat to replace finished, after ascends the boat not to have to replace

Each team of substitutes 2. Replaced when the referee Referee verify eligibility and check replace is completed before the boat, boat shall not replace

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