长年累月 chángniánlěiyuè for years Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 河床上的泥沙经过长年累月的积淀，形成了新的小岛。 héchuáng shàng de níshā jīngguò chángniánlěiyuè de jīdiàn, xíngchéng le xīn de xiǎo dǎo. The silt on the riverbed accumulated over the years to form a new island. Source: Dong Chinese Dictionary