If you are like me and have trouble feeling fully awake first thing out of bed in the morning, try doing a little light cross-training before you run.

如果你像我一样，在早上起床后难以彻底醒过来，你可以在跑步前做一些少量的交叉训练。

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Don't cross the street when the traffic light is red.

当交通灯是红色的时候，不要横过街道。

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The traffic light tells us when to cross the road.

交通信号告诉我们何时穿越马路。

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In light of these cross-currents, Treasury yields plunged further, with the yield on the ten-year Treasury dropping to its lowest level since late 2008.

FORBES: The Week Ahead: Bear Markets Take Time

The second is the introduction of the world's first civilian tilt-rotor aircraft a cross between a light aircraft and a helicopter.

ECONOMIST: INNOVATION

The house features walls of concrete blocks, many with a cross pattern that lets light through.

WSJ: The Pleasures and Pitfalls of Frank Lloyd Wright Homes