descend ͨ��ָ��б��б���½��� drop ָ�����һ���߶����¡� fall ��dropͬ�壬ָͻȻ�����ҵؽ��䣬��fallҲ��ָ�κ����䣬ͬ�߶Ȼ���ʽ�ء� sink ָ�ڿ�����ˮ�д�ֱ�½����³���
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1. Our plane sank to the height of 3 kilometres. ���ǵķɻ��½�������ǧ�ĸ߶ȡ�
2. Unblocked the sink in the Canteen. ������ϴ�Ӳ۲������ˡ�
3. I shall plunge into the pool although but to sink to the bottom. ��һ��Ҫ������ȥ������������ȥҲ�����dz���ˮ�ס�
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n.
1. plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe
2. (technology) a process that acts to absorb or remove energy or a substance from a system
3. a depression in the ground communicating with a subterranean passage (especially in limestone) and f
4. a covered cistern; waste water and sewage flow into it v.
1. fall or drop to a lower place or level
2. cause to sink
3. pass into a specified state or condition
4. go under,
5. descend into or as if into some soft substance or place
6. appear to move downward
7. fall heavily or suddenly; decline markedly
8. fall or sink heavily
9. embed deeply