The Safety Representative retains one copy and the original and one copy must accompany the material to the gate.

安全代表保留一份原件，一份复印件必须随材料一起出大门。

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Copy editors provide a safety net for a publication, catching most of the problematic stuff dropped from above.

CNN: Why 'Amercia' needs copy editors

Now users can also use Active Copy to automatically backup key files from one Pogoplug to another off-site Pogoplug, for additional safety and redundancy.

ENGADGET: Pogoplug now streaming to Xbox 360 and PS3, handling offsite backups