To qualify, customers must show the receptionist either a bicycle padlock key or proof they used public transit to get to the neighborhood.

若要获得优惠，顾客需向接待人员出示自行车钥匙或乘坐公共交通工具前往此区的票据凭证。

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Be wary of websites or email addresses that you don't recognise and always look out for the security icon (a locked padlock or unbroken key symbol) in the bottom of your browser window.

提防不认识的网站或电子邮件地址，永远留神浏览器底下的安全图标(一把锁上的锁或完整的钥匙符号)。

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For example, key in hand of people is difficult to be aimed at the key hole of the padlock when the light is not provided at night.

例如，当夜间在没有光线的条件下，人们手中的钥匙就很难对准挂锁下的钥匙孔。

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Reports about the "body-in-a-bag spy" describe how two experts spent days trying to figure out whether Williams, who was athletic and of medium height, could have contorted himself in such as way as to lock himself into the North Face holdall bag, with a key to the padlock inside.

CNN: STORY HIGHLIGHTS

Rather than using it as a key to unlock opposing teams, tiki-taka was employed as a padlock to keep Spain's goal off-limits to opponents.

WSJ: Euro 2012: Spain's Three-Peat: Just The Beginning