Climbers often need to lock their bodies to the rock with one small finger hold.

VOA: special.2009.12.09

But maybe it is on power with one finger.

但是或许一个手指也可以做到。

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He was motionless, all but for one finger that moved up and down in front of his face as if he were marking time with it.

他一动也不动，除了一根手指在他的面前上下摆动,好像在用它标记时间。

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