Ascidian

[ә'sidiәn]

解释:

(noun.) minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.

伊妮德编辑--From WordNet

解释:

(n.) One of the Ascidioidea, or in a more general sense, one of the Tunicata. Also as an adj.

哈迪编辑