据科学家推测，这可能是因为神经系统活动的增多会削弱苍蝇的生命支持系统。
This is most probably because the increase in neural activity weakens the fly's life-support systems, they speculated.
据科学家推测，土卫二冰冷的表面99%被水冰覆盖，地表之下存在液态水的几率也很大。
The surface of the icy moon is thought to be about 99 percent water ice, with a good chance of liquid water beneath.
据科学家推测，人工甜味剂- - -因为不含任何热量- - -不能激活人体调节摄入量的能力。
Scientists hypothesize that artificial sweeteners - because they don't contain any kilojoules - fail to activate the body's ability to regulate intake.
至今为止，科学家还没有在环境中检测出任何麻醉气体，而且据推测整个气体含量水平也是极低的。
So far, scientists have not detected any anesthetic gasses in the environment, and total levels are expected to be extremely small.
至今为止，科学家还没有在环境中检测出任何麻醉气体，而且据推测整个气体含量水平也是极低的。
So far, scientists have not detected any anesthetic gasses in the environment, and total levels are expected to be extremely small.
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