名词
中文翻译：外皮
同义词：
['outer skin', 'outer covering', 'external layer']
例句：
-
1. The plant's externalintegument is covered in bumps and prickles.
这植物的外皮上长满了疙瘩和刺。
-
2.The scientist studied the external integument of the butterfly to understand itsdefense mechanism.
科学家研究了蝴蝶的外皮，以了解其防御机制。
-
3. Theresearcher found that the external integument plays a crucial role in theanimal's survival.
研究人员发现，外皮在动物的生存中起着至关重要的作用。