Either put it to the test yourself, or help out someone who is trying to travel hopefully with his thumb outstretched.

你可以自己试一试，也可以帮助那些请求搭便车、满怀希望地去旅行的人。

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Hold the spray as shown in the diagram, placing your index and middle fingers either side of the nozzle and your thumb underneath the bottle.

如图示，拿着喷雾器，食指和中指各位于喷嘴的一侧，拇指在瓶底。

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The powered rotation of the thumb can be either controlled directly by the wearer's muscle signals, or can move automatically into position as part of a pre-set grip pattern or gesture.

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There will be no print media either, no pages in Vogue to thumb through with samples to try on.

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The programmable directional thumb pad can be used either for movement or as modifier keys to access auxiliary commands.

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