be on the ball

基本解釋

But I would like to try a different kind of life. I prefer to be on the ball.
但是我想嘗試另外一種生活，一種忙碌的生活。
You”l be on the ball more often, be able to move fludily from task to task and not get lost nearly as much with a trusted system at your side.
你會更出色，從一個任務(wù)到另一個任務(wù)靈活轉(zhuǎn)換，不會迷失在信任的規(guī)劃里。
I had never been to an event like this before, but it was both great fun and very hard work trying to be on the ball constantly to get questions answered and pick out new info!
以前我還從來沒有參加過象這樣的活動，但是對我來說真是充滿了極大的樂趣，而且要看準時機提出在行的問題并從這些回答中獲得新的信息，還真是一件十分困難的事情！

And then, on the top of 3, we get another example: "In other words we've got to get on the ball, darling, what I'm saying, otherwise it'll be fluctuating and lack of true knowledge or crystallization of our plans."
然后，在第三頁上面，又有一個例子：,換句話說我們必須去這個舞會，親愛的，我是說，不然就會變得波動又缺少真知識,或使我們的計劃結(jié)晶化“
耶魯公開課 - 1945年后的美國小說課程節(jié)選

We all know that there is TONS of bad info out there about HDTV and the digital transition, but Circuit City seems to be on the ball.
ENGADGET: Circuit City nails it! HD
During the game, that virtual first-down marker you see on your TV could now be on the field itself before the ball is snapped.
FORBES: Field of Screens