几个世纪以来，许多土地都奉献于水稻种植，许多中国人都是农民，他们为每粒粮食而辛勤劳作。

For centuries, much land has been devoted to rice-planting and many Chinese people are farmers, who work very hard for each grain.

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每粒晶片键合电极面朝上装在粘性膜上。

Each pellet is mounted on an adhesive sheet with wire-bonded electrode side up.

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每粒蚕豆都长黑嘴。

Every bean hath its black.

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Then he had a machine that granted each pigeon one piece of corn every fifteen seconds; that's very, frustratingly slow for a hungry pigeon to get one piece every fifteen seconds.

他们设计了一个能保证,每隔15秒给鸽子喂一玉米粒的装置,对饥饿的鸽子来说是杯水车薪,每15秒才只有一粒玉米

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