蜘蛛纲 meaning in Chinese

arachnida

The first tetrapods , or land - living vertebrates , appeared during the devonian , as did the first terrestrial arthropods , including wingless insects and the earliest arachnids which had already ventured onto land during the silurian
第一tetrapods ,或土地生存脊椎动物,出现在泥盆纪期间,象第一地球节肢动物,包括已经冒险土地在西里瑞斯人期间的无翼的昆虫和最早期的蜘蛛纲的动物。