- 
				           		
A dynaset caches only an integral index to the original data and thus offers a performance gain over a snapshot.
						        										 	
						        					            	
				            	动态集仅缓存原始数据的整数索引,因此比快照提供更好的性能。
								    				            	
				 	    						                 	youdao
				            					            						        	 
		         		 		        			         		
		          					          
		          			                            				          						        				          							        	- 
				           		
A dynaset caches only an integral index to the original data and thus offers a performance gain over a snapshot.
						        										 	
						        					            	
				            	动态集仅缓存原始数据的整数索引,因此比快照提供更好的性能。
								    				            	
				 	    						                 	youdao