accumulate

1. ac- "in addition" + cumul- + -ate.
2. 含义：heap up, amass.

accumulate 积累

前缀ac-同ad-. 词根cum, 块，堆，见encumber,大块，阻碍。此处指堆积成块。

accumulate

accumulate: [16] Accumulate was borrowed from Latin accumulāre, a compound verb formed from the prefix ad-, here meaning ‘in addition’, and cumulāre ‘heap up’ (the source of English cumulative). Cumulāre itself derived from cumulus ‘heap’; English adopted this with its original Latin meaning in the 17th century, but it was not until the early 19th century that it was applied (by the meteorologist Luke Howard) to mountainous billowing cloud formations.
=> cumulative, cumulus

accumulate (v.)

1520s, from Latin accumulatus, past participle of accumulare "to heap up" (see accumulation). Related: Accumulated; accumulating.

1. How can I accumulate enough cash to get out of debt?

我怎么才能攒足钱还清债务呢？

2. Lead can accumulate in the body until toxic levels are reached.

铅会在体内积聚直至造成铅中毒。

3. However, as evidence began to accumulate, experts felt obliged to investigate.

然而, 由于证据开始增多了, 专家们感到必须进行调查了.

4. We let the mending accumulate until Wednesday.

我们让需缝补的衣服一直积存到星期三.

5. It was his ambition to accumulate a million dollars before he turned thirty.

他立志要在而立之年以前攒够100万美元。

【heap, gather, pile, accumulate, amass, collect】
这组词都有“积聚，聚集，积累”的意思，其区别是：
heap: 主要指把沙、石、煤、草等堆高，不强调整齐。
gather: 普通用词，指人或物或抽象事物都可用。侧重于围绕一个中心的集合、聚集。
pile: 着重指比较整齐地把东西堆积在一起。
accumulate: 几乎可用于指任何事物量的增加，侧重连续不断地，一点一滴地聚积。
amass: 着重大量地积聚，尤指对如金钱、珠宝等有价值东西的大量积聚。
collect: 普通用词，多用于指物，侧重指有区别地作选择或有安排有计划地把零散物集中起来。