1. Never pipe the discharge line directly into a drainage ditch, sewer or sump. �ŷŹܵ����Բ�Ҫֱ�ӽӵ���ˮ������ˮ������ˮ�ӡ�
2. The actuators have a self-contained oil sump so a separate oil supply is not required. ����������һ�����Ұ������͵ǣ�ʹһ��������ʯ��Ӧ�Dz��DZ���ġ�
3. The stability of sludge sump of underground continuous wall during short sump excavation was discussed. ����������������ǽ�ཬ���ڶ̲��ھ�ʱ���ȶ������⡣
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n.
1. an oil reservoir in an internal combustion engine
2. a well or other hole in which water has collected
3. a covered cistern; waste water and sewage flow into it
