名词
中文翻译：Unknown
同义词：
['ketose', 'ketose', 'ketose']
例句：
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1. Ketones are a type of sugar that can be used as an energy source by certain organisms.
酮是一类糖，某些生物可以利用它作为能量来源。
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2. In the human body, ketone bodies are produced during fasting and exercise.
在人体中，酮体是在禁食和运动时产生的。
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3. The body uses ketone bodies to produce energy when there is not enough glucose available.
当葡萄糖不足时，身体使用酮体来产生能量。