雄性鳐鱼的抱握器在交配时能牢牢固定住雌性。

The male ray's ___claspers firmly hold the female during mating.

这种虾用它的抱握器牢牢抓住岩石，防止被水流冲走。

The shrimp used its ___claspers to firmly hold onto the rock, preventing itself from being swept away by the current.