蜘蛛用它的须肢抓住猎物并将其送入嘴中。

The spider uses its ___pedipalps to catch prey and bring it to its mouth.

蝎子用它的触肢来感知周围环境并捕捉猎物。

The scorpion uses its ___pedipalps to sense the surroundings and catch prey.