藻，
;
，干minute floating marine tunicate having a transparent body with an opening at each end.
身体透明、
端有孔并且有背囊的微小的浮
动物。
minute floating marine tunicate having a transparent body with an opening at each end.
身体透明、端有孔并且有背囊的微小的浮动物。
The name tunicate derives from a secreted protective covering (the tunic) containing cellulose.
被囊动物的名称来自它们分泌的含纤维素的保护性外罩（被囊）。
A tunicate (Halocynthia pyriformis) having a yellow or orange-red color and a sandpapery surface, found in shallow water along the northern Atlantic coast of North America.
梨：一种被囊类动物（桃），体呈黄色或桔红色，表面粗糙，生活于北美洲北大西岸的浅水区域中
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