noun🔗Share种皮，外种皮。 A seed coat."The bean's testa easily peeled away to reveal the tender seed inside. "豆子的种皮很容易剥落，露出了里面嫩嫩的种子。plantbiologyseedpartChat with AIVocabulary GamePractice Reading
noun🔗Share外壳，骨骼。 The external calciferous shell, or endoskeleton, of an echinoderm; the test."While walking on the beach, we found a beautiful, empty testa of a sand dollar, perfectly preserved. "在海滩上散步时，我们发现了一个保存完好、非常漂亮的沙钱外壳，里面空空的。animalbiologyanatomystructureChat with AIVocabulary GamePractice Reading
