ccumulation n.積累、calculation n.計算(結(jié)果)、circulation n.循環(huán)，銷路，周轉(zhuǎn)、congratulation n.祝賀，賀辭、formulation n.確切表述、insulation n.隔離，絕緣、manipulation n.操縱，操作、population n.人口

以-iration結(jié)尾的單詞

admiration n.羨慕，欽佩

expiration n.期滿

inspiration n.靈感

以-llation結(jié)尾的單詞

cancellation n.刪除，取消

distillation n.蒸餾

installation n.安裝，裝置

oscillation n.擺動，振動

以-oration結(jié)尾的單詞

collaboration n.協(xié)作，通敵

commemoration v.紀(jì)念

corporation n.公司

decoration n.裝飾物

deterioration n.退化

elaboration n.詳盡闡述

evaporation n.蒸發(fā)，升華

exploration n.勘探，考察