[jī lěi]
(逐渐聚集) accumulation; accumulate
									
										have accumulated a wealth of experience
										积累了丰富的经验
									
									
									
										accumulate first-hand data
										积累第一手资料
									
									
									
										the accumulation of knowledge
										知识的积累
									
									
									
										primitive accumulation of capital
										资本的原始积累
									
									
									
										patiently accumulate data
										耐心地积累资料
									
									[核子] build-up