1. Keep one's eye on the ball challenge for the ball ball the jack take up the ball set the ball rolling keep the ball rolling open the ball catch the ball before the bound have the ball at one's feet put the ball in sb.
On the ball 这个习惯用语的意思是：一个人很机灵，在工作方面做的非常出色，总是名列前茅。有人可能要问，一个人精明能干，工作出色，这跟ball 有什么关系呢？
2. Words close, the meaning that adds itself is: Person hope can be on reticulation keep one's feet, build oneself career after that.
四个字合起来，加上本身的意思就是：人希望能够在网状物上站住脚跟，而后建立起自己的事业。
3. Act on one`s own; decide for oneself; keep the initiative in one's own hand; stand on one's own feet
自己作主，不受他人支配
4. The frozen snow was so slippery that it was hard to keep one's feet.
冰雪溜滑，人们很难站稳。
5. The frozen snow was so slippery that is was hard t keep one's feet. He slid smoothly on the ice.
冰雪溜滑，人们很难站稳。他在冰上平稳地滑行。
keep one's feet什么意思
6. He slipped on the ice and hurt his leg. brace one's feet to keep from falling
他在冰上滑倒跌伤了腿。用力叉开两腿以免跌倒