ring; hoop; loop; (chain) link; classifier for scores in archery etc; to surround; to encircle; to hem in

surname Huan

around the world; worldwide

environmental protection; environmentally friendly; abbr. for 環境保護|环境保护[huan2 jing4 bao3 hu4]

(zoology) segment (of the body of a worm, centipede etc); (fig.) a part of an integrated whole: aspect (of a project), element (of a policy), sector (of the economy), stage (of a process) etc