Double safety unit prevents screw tap from wearing out.

二重安全离合器装置能防止丝攻之折损。

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Double safety sealed, with outer shrink wrap film and inner bottle freshness seal.

双安全密封，收缩包装膜外及内瓶新鲜印章。

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Water and electricity is completely separated, in addition, it is equipped with unique" electricity guard" device— double safety.

水电完全分离，并且具有独特的防电墙装置---双保险。

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The Transport Committee (at 10.05am) has a double-headed session covering road safety, with junior Transport Minister Mike Penning and then moves onto flight time limitations - the acceptable hours for pilots and aircrew.

BBC: Week ahead in Parliament

Recently upon reflection, I remember that long ago, my dad actually used a double-edged razor (aka a safety razor) before going electric.

FORBES: Honey, YouTube Replaced My Dad!

Russia plans to double its atomic energy capability, even as experts say safety standards have improved little since the Chernobyl disaster which happened 20 years ago this week.

NPR: Russia Plans Nuclear Power Expansion