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Keep it safe and keep a copy.
放在安全地方、保留备份。
youdao
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The material in safe file should be original material, and try to not store its copy.
安全档案内保存的资料，一般要求是原始资料，尽量不保存复印资料。
youdao
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The material in safe file should be original material, and try to not store its copy.
安全档案内保存的资料，一般要求是原始资料，尽量不保存复印资料。
youdao