1. This undesirable result would be a direct consequence of differences among species. ���ֲ�����Ľ���������ּ������һ��ֱ�Ӻ����
2. In addition, the most undesirable effect is that examinations encourage bad study habits. ��Σ�������ĸ�������ʹѧ�����ɲ�����ѧϰϰ�ߡ�
3. If we can not take useful means, we may not control this trend, and some undesirable results may come up unexpectedly, so what we should do is. �������Dz���ȡ��Ч�ķ������Ϳ��ܿ��Ʋ����������ƣ��ͻ����һЩ���벻���IJ�����������ԣ�����Ӧ�������ǡ���
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n.
1. one whose presence is undesirable
2. not desirable
3. not worthy of being chosen (especially as a spouse)