When Noah and his family stepped off the ark, they spoke a single language that was passed on to their offspring.

当诺亚和他的家人们走出方舟时，他们所说的唯一一种语言遗传给了他们的后代。

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I stepped it up to 15 miles and then finally I did a single 22 mile bike ride a few days before June 7.

我逐步骑到了5英里，后来6月7日前的日子里，我完成了单趟22英里的骑行。

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The exterior features a distinctive stepped roof with a single rear door mounting the spare wheel.

它的外观采用了独特的阶梯式屋顶，加上安装在后门的备用轮胎。

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Even though polls showed that two-thirds of Americans of all political stripes supported the ideas in this bill, not one single Republican stepped up to say, this is the right thing to do.

WHITEHOUSE: President Obama on the American Jobs Act in Scranton, Pennsylvania | The White House

He stepped forward into a single, ferocious moment.

NEWYORKER: The Tree Line, Kansas, 1934

Robinson duly stepped up to give Gloucester victory by a single point.

BBC: Aviva Premiership: Gloucester 22-21 Leeds