以鸡为例，人不能吃鸡的羽毛、血、脚、头，总之，动物身上只有44%的部分可供人吃。

Neither, in the case of chicken, can one eat feathers, blood, feet or head. In all, only about 44% of the live animal fits to be eaten as meat.

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胰头、胰颈的静脉血由胰十二指肠上下静脉和胰颈静脉引流。

The head and neck of the pancreas are drained by superior, inferior pancreaticoduodenal veins and pancreatic cervical vein.

youdao

胰头、胰颈的静脉血由胰十二指肠上下静脉和胰颈静脉引流。

The head and neck of the pancreas are drained by superior, inferior pancreaticoduodenal veins and pancreatic cervical vein.

youdao