| 单词 | drop off | 
| 释义 | drop offverb (adverb) 1. (intransitive) to grow smaller or less; decline  2. (transitive) to allow to alight; set down 3. (intransitive) informal to fall asleep  noun drop-off 4.  a steep or vertical descent  5.  a sharp decrease  drop-off(ˈdrɒpɒf) noun 1.  a sharp decrease  There has been a slight drop-off in business since the hurricane.  The company is cutting up to 30,000 workers because of an anticipated drop-off inorders.  a drop-off in demand for new and used cars  There's been a drop-off in the number of women getting screened recently.  The entire industry had seen a dramatic drop-off in sales. 2.  a steep or vertical descent  a spectacular reef where the drop-off plunges 6,000 ft to the seabed  On the other side was a 50yd drop-off.  Here there is a steep drop-off into very deep water.  | 
	
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