If you have a subject with long and thin fingers a pose like the one above will allow you to use the thumb or index finger closer to the camera lens.

如果你的模特手指细长，你也可以像上图一样，让拇指或者食指最靠近镜头。

youdao

He handed his cigarette to the guy next to him, made a circle with the thumb and index finger of one hand.

他把手里的烟递给旁边那个家伙，用一只手的拇指和食指画了个圈。

youdao

With one thumb mechanics, slide left or right to weave your way through the ever changing spaces. Master the deceptively simple controls to get the highest score you can.

用一个拇指力学，幻灯片左或右编织你的方式通过不断变化的空间。掌握简单的控件，让你可以得分最高。 。

youdao

The BlackBerry will emphasize typing with one thumb, with gestures and the ability to delete with a thumb swipe anywhere.

NPR: RIM Changes Name To BlackBerry, Unveils 2 Phones

That happens to be annoying when holding the device with one hand since you can't just use a thumb, or with two hands (for weaklings like us) because you have to drop one hand to do scrolling, or use a janky dual thumb method.

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