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来源：雅诚德英语网
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.
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.
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。