1. They ought to finish ploughing the south field by tomorrow. ����������Ӧ�������ϱߵ�һ��ء�
2. Farmers plough in autumn or spring. ũ��������������
3. Are you ready to end your wedge and now plough turns? �������˽��������ʽ���к���ʽת������
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n.
1. a group of seven bright stars in the constellation Ursa Major
2. a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing v.
1. move in a way resembling that of a plow cutting into or going through the soil
2. to break and turn over earth especially with a plow