These caudofemoralis muscles provide the power stroke allowing fast forward movement.

这些肌肉组织（caudofemoralis）在动物高速前进过程中，为腿部提供了力量支持。

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The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.

进气行程，活塞下行；压缩行程，活塞上行；做功行程，活塞下行；排气行程，活塞上行。

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By the time the crankshaft completes two revolutions, each cylinder in the engine will have gone through one power stroke.

曲轴转两周，发动机里的气缸完成一个作功行程。

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Zip the kite back and forth in the maneuver kitesurfers call a "power stroke" and it's like getting yanked forward by a 200hp motorboat.

FORBES: Hook In and Hold On

If Jason Bay can find his power stroke and Reyes and Beltran can stay healthy, the Mets just might score enough runs if the rotation can keep opponents off the board.

FORBES: Underdog, Financially Troubled Mets Just May Surprise

The Mets rediscovered their power stroke on Friday.

WSJ: Rain forces postponement of Mets-Braves game