1. A stinging or grasping organ in the outer cytoplasm of certain protozoans, especially ciliates, consisting of a threadlike or bristlelike filament that can be discharged suddenly from a minute capsule. 
   丝泡，线泡某些原生动物，尤指纤毛虫的外胞质中的叮咬或执握器官，由线状的或鬃毛状的细丝构成，可突然从一个小囊中释放出来
2. diaphragm and diaphragm capsule 
   膜片和膜盒
3. A circumscissile seed capsule. 
   周裂的种子荚
4. (anatomy) resembling a capsule. 
   （解剖学）类似于囊。
5. It is enclosed in a capsule. 
   它包在胶囊里。

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