他猛烈挣扎，从我的（掌控）中滑脱了。

He struggled fiercely and slipped from my ___grasp.

攀登者在那狭窄岩架上的（抓握）虽不牢靠却至关重要。

The climber's ___grasp on the narrow ledge was tenuous but vital.

在武术中，牢牢（抓住）对手的手腕可能成为决定性的优势。

In martial arts, a firm ___grasp on your opponent's wrist can be a decisive advantage.