因为，这些余怨一旦处理不当就会酿成灾害，结果对自己的安全造成威胁。
Since these residues of misunderstanding and hatred will incubate serious disasters, if we don't treat them carefully.
隧道一旦发生火灾，如果处理不当，将造成严重后果。
It will cause terrible disaster if a fire road tunnel catches is incorrectly treated.
隧道一旦发生火灾，如果处理不当，将造成严重后果。
It will cause terrible disaster if a fire road tunnel catches is incorrectly treated.
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