tunicate e被囊动物;有被膜的
tunicate bulb[植] 有被鳞茎
N（名词） any minute primitive marine chordate animal of the subphylum Tunicata (or Urochordata, Urochorda). The adults have a saclike unsegmented body enclosed in a cellulose-like outer covering (tunic) and only the larval forms have a notochord: includes the sea squirts 被囊动物 → see also ascidian
ADJ（形容词） of, relating to, or belonging to the subphylum Tunicata 被囊类亚门的; 属于被囊类亚门的