accumulation
词根词缀：
accumulate v. 积累
ac 加强 + cumul 堆积 + ate 做，造成，使… → 一堆再堆 → 积累
accumulation n. 积累；堆积物
ac 表加强 + cumul 堆积 + ation 行为，过程，状态，结果 → 积累；堆积物
cumulate v. 累积
cumul 堆积 + ate 做，造成，使… → 累积
cumulative adj. 积累的，渐增的
cumul 堆积 + ative 有…倾向（性质）的，属于…的 → 积累的，渐增的
cumuli n. 堆积，累积
cumul 堆积 + i，cumulus 的复数 → 堆积，累积
cumulonimbus n. 积雨云
cumulo 堆积 + nimbus 雨云 → 积雨云
cumulus n. 积云
cumul 堆积 + us 表名词，用于科学术语 → 积云
数据来源：新东方英语词汇速记大全
相关例句：
Constant improvements and accumulation of knowledge and experience has been the driver behind this development.
持续不断的改进和日积月累的知识和经验是我们发展的动力。
The accumulation and excess of this protein in the brain is one of the hallmarks of Alzheimer's disease.
而这种蛋白在脑内的积聚和过剩是阿兹海默症的显著特征。
Upon accumulation of some data you can start analysing and focus on reduction of waste in the particular area.
在收集了一些数据之后，可开始分析和关注特定区域的废料减少情况。
The results of accumulation indicated that copper, zinc mainly accumulated in gill, liver and kidney.
积累实验结果表明：铜、锌主要积累于鳃，肝脏和肾脏中，在肌肉和骨骼中有少量积累。
The penetration of capital provides the general condition for capital accumulation.
资本的扩张和渗透为资本积累提供了必要的条件。
The funds needed will mainly be drawn from accumulation within the enterprise.
所需资金主要取给于企业内部的积累。