valve /ˈvælv/ n. ［c］ 1. 阀，活门：an adjusting valve 调整阀；a gas valve 进气阀；a release(relief) valve 放泄（安全）阀 2.(心脏的)瓣膜：the valve of the heart 心脏瓣膜Valves in the heart control the flow of blood in the human body. 心脏的瓣膜控制人体血的流量。