原始热带雨林 yuánshǐrèdàiyǔlín virgin tropical rainforest Origin Definitions Defs Strokes Stroke Words Sentences Sents 原始 yuánshǐ adjective primitive primitive; primeval; referring to the earliest stage of human development or an unrefined state热带雨林 熱帶雨林 rèdàiyǔlín noun tropical rainforest dense evergreen forest found in tropical regions with high temperatures and heavy rainfall throughout the year