grip the foot的意思|示意

When he took the other foot off the ladder, however, it met no resistance at all-only his tight grip on the ladder-rung kept him from toppling off balance.

他又把另一只脚从梯子上移来，然而，这只脚根本没有碰到什么阻碍——仅靠他紧抓住梯子的横档，使他没有失去平衡。

My right foot slipped, missed its grip on the blocks and slid out from under me.

我的右脚一打滑，没撑住跳水板，我顺着它滑了出去。

The balance ability included standing, standing on one foot, walking manners, standing up and walking, tandem walking, lateropulsion and also grip strength.

平衡能力包括直立、单脚站立、行走步态、起立和行走、串行和列行步列检查以及握力检查。