Main organ of the nervous system ; it is located in the cephalothorax .

神经系统的主要器官;它位于这个甲壳类头胸部。

Anterior cavity of the digestive tract located on the lower surface of the cephalothorax ; it lets food enter .

消化道的前端的摄取食物的开口，位于甲壳类头胸部的较低表面入。