In theory, this could one day provide a key component of any nanoscale electrical circuit-a way to mechanically turn the current on and off or change its direction.

理论上讲，这种机械切换电流通断或方向的方法，或许有一天会成为任何纳米尺度电路的关键元件。

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People who saw the sign could text in their favourite locations and they would be displayed on the electronic signpost and the arrow would turn into the direction of the location.

看到指向标的人们发短信输入他们最喜欢的地方，它们就会被显示在电子指向标中，箭头就指向那个位置的方向。

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That evening she went out, and was seen to turn her steps in the direction of the Rue de Paris, where the inns are situated.

到晚上，她下楼，有人看见她朝着巴黎街走去，那正是有许多客栈的地方。

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"Only by making a dramatic turn in the direction of the agenda of the Republican Revolution can we hope to attain majority status again, " Pence said.

CNN: Scramble is on to replace Congressional leaders

This adjusted the airflow to the insect's wings, in turn adjusting the direction of the lift and thrust that the wings produced.

BBC: Footage reveals how insects use their bodies to hover

From Coffey Street, turn right back onto Van Brunt in the direction of the water.

BBC: A remote hook in New York��s harbour