求翻译：a、EDC4进水烧坏问题,我们建议增加保护罩，三一同意尽快改进，同时三一要求VOLVO 在发动机出厂前核对发动机自带堵头是否足够，并进一步提高防水性能。针对烧坏的EDC4要求VOLVO免费更换。我们答复有售后来决定。是什么意思？

a, EDC4 water burn problem, we propose to increase protection cover, Trinity agreed to improve as soon as possible, while thirty-one requirements VOLVO engine check engine comes with the factory plug is sufficient, and further enhance the waterproof performance. VOLVO burned EDC4 requirements for a

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A, EDC4 burn out the water problem, we propose to increase the protection cover, 31 agreed to improve as soon as possible, while 31 called VOLVO engine checks before delivery engine comes with plug are sufficient, and further improve the water resistance. EDC4 requirements over the burnt out VOLVO f

A, EDC4 burn out the water problem, we propose to increase the protection cover, 31 agreed to improve as soon as possible, while 31 called VOLVO engine checks before delivery engine comes with plug are sufficient, and further improve the water resistance. EDC4 requirements for burned VOLVO free repl