Class Arachnida

同根派生

Any of various arthropods of the class Arachnida, such as spiders, scorpions, mites, and ticks, characterized by four pairs of segmented legs and a body that is divided into two regions, the cephalothorax and the abdomen.
蜘蛛纲动物一种蜘蛛纲节肢动物们，如蜘蛛、蝎子、小虫及扁虱，特征是有四对分节的腿和分为两部分即头胸部及腹部的身体
(zoology) relating to or resembling a member of the class Arachnida
（动物学）关于蜘蛛类动物或类似蜘蛛类动物的
(zoology) relating to or resembling a member of the class Arachnida.
（动物学）蜘蛛目的或类似蜘蛛目的。
Kindly send us two samples of each class quote for.
报价时，请对每一个等级的各寄两个样品。
The average age of the boys in this class is fifteen.
本班男生的平均年龄是十五岁。