cumulative effects短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 港湾湿地 Picking up pretty much where he left off, Mr Lacey concentrates on the past30 years, during which the kingdom experienced the cumulative effects of a succession of crises. 和他的上一本书衔接比较紧密，莱西在这本书里主要集中讲述过去30年的事情，期间王国遭遇了一系列危机，彼此间推波助澜。 ecocn