他们的数量以及力量，他们的起起落落，他们的游戏和相反的游戏，超越所有的，它们自己营养的定律，那对我们还是未知的。
Their number and strength, their ebb and flood, their play and counter play and above all the laws of their nourishment remain quite unknown to us.
身体健康的人注重营养和锻炼，他们很重视检查自己的身体状况。
People who are well are concerned with nutrition and exercise and they make a point of monitoring their body's condition.
在树林中迷路并且快要饿死的人可能通过咀嚼自己的鞋子获得营养。
A person who is lost in the woods and starving can obtain nourishment by chewing on his shoes.
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