natural selection的解释含义及用法例句
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natural selection的解释 n. [生]自然选择,物竞天择说 natural selection的例句 A systematic long-term change of this kind suggests the action of natural selection and indicates that female skeletal characteristics confer greater fitness. But is this the whole story. 这种长期的系统变化说明自然选择的作用，并表明女性骨骼的特性较大的适应性。但是，情况完全是这样的吗？ |
