gonopoda

例句：

1. 1.The gonopoda of the crab are used for gripping and holding onto objects.
   螃蟹的足部用于抓住和握住物体。
2. 2. The gonopoda of the lobster are used to grasp prey.
   龙虾的足部用于捕捉猎物。
3. 3.The gonopoda of the spider are used to catch insects.
   蜘蛛的足部用于捕捉昆虫。