Science 4 - Unit 1.4 - Different types of skeletons

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What is an endoskeleton? 什么是内骨骼？

A skeleton inside the body. 身体内部的骨骼。

What is an exoskeleton? 什么是外骨骼？

A skeleton on the outside of the body. 身体外部的骨骼。

What does the word "endo" mean? "endo"这个词是什么意思？

Inside. 内部。

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