Attention: do not bridge over safety devices and door contacts!

注意：不能短接安全回路及轿门，厅门接点。

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In addition, as a precaution because of potentially dangerous contacts, susceptible animals on one farm located next door to the field are being culled.

为防止潜在的动物间的危险性接触，作为预防措施，正在销毁与牧场相邻的一间农场中的易感动物。

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Forty years ago, a little ping-pong ball broke the ice and the door to China-US contacts was reopened.

40年前，小小乒乓球击破坚冰，中美交往大门重新打开。

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It has been patching up relations with Lebanon, which has opened the door to renewed contacts with the United States and European Union, especially France.

BBC: Arab leaders meet to heal rifts

Similarly, experienced retirees can take on projects at their discretion, and displaced workers can use freelance work to make contacts and get their foot in the door.

FORBES: The Best Freelance Careers

But a significant percentage of the voter contacts they pointed to included indirect contact -- like door hangers -- that didn't give voters the all-important sense of personal connection.

CNN: Analysis: Obama won with a better ground game