Chelsea切尔西 Collaborative Health on the Environment协同卫生环境 Community Health Education社区健康教育 Community Health And Environment社区卫生和环境 Certified Home Economist经济学家会计师 College of Home Economics大学的经济学家 Conventional High Explosives传统的烈性炸药 Christian Home Educators基督教家庭教育工作者 Choice Hotels Europe选择旅馆欧洲 Cascadia Health EducatorsCascadia健康教育 Channel Hot Electron沟道热电子 Chemical Engineer化学工程师 Center for Health and the Environment对健康和环境的中心 Centre for Health Evidence卫生局的证据 Central Head-End中央前端