The first transistor was about the size of the palm of a hand, with a depth of two matchbooks stacked on top of each other.

第一个晶体管的大小约为手掌大小，有两个叠起来的火柴盒那么高。

youdao

Use your hands and work a ball of modeling clay that is approximately the size of your palm into a pancake shape 1/4-inch thick.

用你的手把纸粘土攥成一个球形，在手掌中拍扁了以后大概是个煎饼大小，1/4英尺厚。

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3 ounces of meat, fish, chicken, etc. is about the size of the palm of a woman's hand or a deck of playing CARDS.

3盎司的肉，鱼，鸡等，大概相当于一位女士的手掌或者一副牌的大小。

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The differences extend well beyond size: The palm-size devices lack keyboards and color screens and are intended pretty much solely for "to do" lists and telephone numbers, while the hand-helds are surprisingly complete computer systems.

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It offers drop-in loading and a 24mm film that results in a high-quality, palm-size camera.

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Microsoft has countered by importing Windows CE, a stripped-down version of Windows that can run anything from cellular telephones to videogame consoles, to palm-size computers.

FORBES: Sub-Windows