鸟类学 niǎolèixué ornithology Definitions Defs Origin Strokes Stroke Words Sentences Sents 鸟类 鳥類 niǎolèi noun birds birds as a group; bird species; specifically feathered, two-legged, egg-laying animals学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science
