沉积岩 chénjīyán sedimentary rock Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 地质学家正在研究沉积岩的层面。 dìzhìxuéjiā zhèngzài yánjiū chénjīyán de céngmiàn. Geologists are studying the bedding planes of sedimentary rock. Source: Dong Chinese Dictionary