1. After driving on the bumpy surface, it was nice to get back onto even ground. ������ʻ�����ƽ��·�ص���ƽ����·�������Ǻü��ˡ�
2. Half of all college students change their majors at least once as they travel the sometimes bumpy road that will lead right degree. �ִ�ѧ�����ٶ������һ��רҵ�������������ҵ�ȷ�ķ���֮ǰ������������·һ����
3. The military convoy breaks a chain to open the gate, shoos cows from its path and circles the property on bumpy dirt road lined by mesquite trees. ���ӵij�������һ�����Ӵ��ţ���ĸţ��·�����ߣ�����Χ��λ�����������������������·�ϵķ��ݡ�
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adj.
1. causing or characterized by jolts and irregular movements
2. covered with or full of bumps