noun 下载 🔗分享 蝉,知了 Any of several insects in the superfamily Cicadoidea, with small eyes wide apart on the head and transparent well-veined wings. Examples : "In the summer, the loud buzzing of cicadas filled the air as they clung to the trees. " 夏天,蝉紧紧地趴在树上,发出的嗡嗡声充满了整个空气。 insect animal nature biology organism environment 与AI对话词汇游戏阅读练习