testa
英 ['testə] 美 ['testə]

n.

外种皮，（棘皮动物等的）甲壳，（介壳虫等的）介壳；

变形

复数：testae

英英释义

testa[ 'testə ]

• n.protective outer layer of seeds of flowering plants

  同义词：epispermseed coat

双语例句

用作名词(n.)

1. There is a very small hole in the testa of a seed.
   种子的种皮上有一个非常小的洞。

权威例句

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