从构造上看，阑尾位于盲肠的末端，不与其他部分连结。 它有一个比铅笔心还细的开口，防止了可能携带病原菌的废物流入其中。

Structurally, the appendix is isolated from the rest of the gut, with an opening smaller than a pencil lead, protected from the fecal stream that might be carrying pathogens.

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减速机轴(1)前端与主轴(3)的末端均采用多边形结构构成，并且与凹槽(5)及凹槽(6)的内部构造相同。

The front end of the speed reduction crankshaft (1) and the tail end of the main shaft (3) are made by adopting the polygon structure and are same as the inner structures of the grooves (5) and (6).

youdao

减速机轴(1)前端与主轴(3)的末端均采用多边形结构构成，并且与凹槽(5)及凹槽(6)的内部构造相同。

The front end of the speed reduction crankshaft (1) and the tail end of the main shaft (3) are made by adopting the polygon structure and are same as the inner structures of the grooves (5) and (6).

youdao