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Then he can hardly be compelled by external influence to take many shapes?
难道他就完全不可能迫于外界的影响而改变自己的形态吗?
The three components of the group as described above, and the final external influence.
上面所提到的三个组成成分和外部影响。
In practical ecosystem, there are diffusions, perturbations in species as well as external influence.
作为生态系统,种群自身和相互间的扩散、扰动以及系统外部的影响不可避免。
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