1.They said some cells that help us process light had deteriorated in the older people.
deteriorate 惡化
There are fears that the situation might deteriorate into full-scale war.
人們擔心形勢可能惡化而演變成一場全面戰爭
。2.We need to gear up for this.
gear up for 為...做準備
They geared up for the new season's production.
他們為新的一個季度的生產作好準備
。