Anaerobic(无氧的)：氧不存在的。 Anatomical Dead Space(解剖学的死腔，DS)：滞留在呼吸管道中（鼻、口、喉、咽、气管、支气管、小支气管）不进行气体交换的新鲜...
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尽管这颗遥远的星球并不存在有氧环境，但是科学家也不能排除厌氧生命体存在的可能。
Although the distant planet did not have an oxygenated atmosphere, scientists could not rule out the possible existence of anaerobic life forms.
一般的火焰是物质和氧分子剧烈结合的反应，只有在具有相当氧浓度的环境才会发生，所以在恒星这种高能量但低氧的环境中，火焰并不存在。
Fire, typically defined as the rapid molecular acquisition of oxygen, happens only when sufficient oxygen is present and is not important in such high-energy, low-oxygen environments such as stars.
氧终端表面能带向下弯曲，带隙较宽，带隙中不存在表面态。对两种终端金刚石薄膜的导电机理进行了讨论。
The results indicated that for the hydrogenated diamond surface, the surface energy bands bend downwards and there exists a shallow acce…
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