Many openers have a magnet or set of clamps to grip the open lid.

许多开启器是用磁铁或夹具来夹紧要开启的盖子。

《柯林斯英汉双解大词典》

Open and close your fingers or flex your wrist between each grip.

每次抓握的间歇都尝试活动手指及手腕。

youdao

The force-feedback or haptic controller is a pistol-grip design with a trigger to activate movement and a thumb-controlled side button to open or close the gripper.

该力反馈与触觉控制器使用了手枪握把的设计，并带有一个触发器用来启动动作以及一个由拇指控制的侧方按钮用来控制机械手爪的开闭。

youdao

Lifting your eyebrows makes the device open its grip, clenching your teeth shuts it and moving your lips to the left and right twists the claw, while other motions are currently handled by using a PlayStation 2 controller.

ENGADGET

There are signs that Mr Slim's grip on Mexican telephones is being prised open.

ECONOMIST: Carlos Slim

The government has also eased its iron grip on the economy, allowing citizens to open their own small businesses.

WSJ: Pope Seeks Greater Freedom for Church in Cuba