a small room in which a prisoner is locked up or in which a monk or nun sleeps 单人牢房,(修士、修女睡的)单人小室 ■a small compartment in a larger structure such as a honeycomb (诸如蜂巢等较大结构中的)单元,间隔间 ■(historical)a small monastery or nunnery dependent on a larger one (史)附属小修道院
(Biology)the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic (生)细胞 ■an enclosed cavity in an organism 生物体的小腔 ■(figurative)a small group forming a nucleus of political activity, typically a secret, subversive one (喻)政治活动核心小组(通常为颠覆性的秘密组织) the weapons may be used to arm terrorist cells. 这些武器可能会被用来武装恐怖分子的核心小组。 ■the local area covered by one of the short-range transmitters in a cellular telephone system 基站覆盖区
a device containing electrodes immersed in an electrolyte, used for current-generation or electrolysis 电解电池 ■a unit in a device for converting chemical or solar energy into electricity 光电元件