The difference between a helping hand and an outstretched palm is a twist of the wrist.

援助之手和摊开的巴掌的区别就是转一下手腕。

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A twist of the wrist in weak light conditions automatically lights up the display backlight.

在微弱的光线条件下自动亮起，手腕扭转显示器背光。

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John taking unsteady aim-a twist of the wrist and the quivering meniscus breaks.

NPR: Excerpt: 'Woodsburner'

The mesh bag was long enough that if we caught a tiger swallowtail or a spicebush swallowtail, or a mourning cloak, or a European cabbage, or a common sulphur, or a red admiral, or a painted lady, or a monarch, or a viceroy we could, with a twist of the wrist, flip its tapered tip over the wire rim and trap the butterfly inside.

NPR: Excerpt: 'At Large and At Small'

With a twist of his wrist, the Pulitzer Prize-winning critic rendered decisions that influenced a nation of moviegoers and could sometimes make or break a film.

NPR: Ebert, Nation's Best-Known Film Critic, Dies At 70