n.节肢动物
名词arthropod的复数形式.
It may be mechanically transmitted by arthropods. 它可以通过节肢动物机械地传播。
That left a question of what the ancestor of the arthropods looked like. 许多学者据现有的线索，提出节肢动物理论上假设的祖先，但结果很不一致。
