However using light to find one's own way around requires vastly more energy, since the eyes have to detect the tiny fraction of the light that bounces off each part of the scene.

然而，利用光来找到自己的方向极大地需要更多的能量，因为眼睛必须检测从场景的每个部分反射的光的极小部分。

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Department of Energy. Specific instruments are designed to detect particular kinds of radiation that get released with each decay.

专门的仪器被设计用来探测特定的每次裂变所释放出的辐射。

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Both carbon dioxide and methane absorb energy from sunlight and both leave a unique signature that can be measured to detect changes in intensity.

二氧化碳和甲烷都从太阳光中吸收能量，并且均可在光谱留下独特痕迹，能够探测出光强变化。

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The satellites detect the infrared energy emitted by land.

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This release of energy makes the isotopes easier to detect with standard physics technique.

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For radar systems as presently understood to detect and track a B-2, an enormous energy supply would be needed to power the search radar.

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