物质被吸入黑洞的过程，以及其下落时释放能量的过程，都会产生无线电波(还有大量其他射线)。
The radio waves (and lots of other radiation) are the result of matter being drawn into the black hole and releasing energy as it falls.
他们吸入氧气，将糖转化成能量，并释放二氧化碳。
They're taking in oxygen to help them convert sugars into energy, and releasing carbon dioxide.
大脑仅仅占到正常人体重的百分之二，但却消耗了我们吸入的大约百分之二十五的氧气，以及整个身体能量的百分之二十。
The brain makes up just 2 per cent of a person's body weight, but USES around 25 per cent of the oxygen we inhale and consumes 20 per cent of the body's energy.
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