Unlike the blades on old-fashioned propeller engines, these blades spin around at the back of the engine.

与老式螺旋桨发动机的叶片不同，这些叶片在发动机的后部旋转。

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Squeeze your shoulder blades together and concentrate on stretching your upper back.

将你的肩胛挤到一起，专注于拉伸你的上背。

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When the helicopter began getting away from the pilot he pulled back on the cyclic which controls the pitch of the rotor blades only to find the aircraft unresponsive.

当直升机开始与飞行员脱离的时候，他向后扳用来控制转翼叶片变矩的操纵杆，但直升机毫无反应。

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During his career he has fallen almost 700 times, breaking his back, shoulder blades, collarbones, ribs, ankles, cheekbones, a wrist, and a leg in the process.

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While the EBITDA margins for Gillette have already declined over 2008-10 behind razors sold at highly discounted prices, we currently forecast EBITDA margins to rise gradually as consumers come back to buy blades.

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The fact that it was a strike from Tevez - plus a penalty from Wigan's Sheffield United old boy David Unsworth - which sent the Blades back into the Championship after only one season in the top flight only added a dash of irony to the last-day drama.

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