美 [bɔːl ɪt ʌp]
形成球状：将某物形成球状。
... ball firing 实弹射击 ball it up 过放荡生活 ball of fortune 受命运摆弄的人 ...
She threw the ball up and caught it again.
她把球抛起来又接住。
Netball hands cast various difficult tricky problems for the ball, and it is up to you in a specified time to make the number of home base.
投球手会投出各种难度刁钻的球，看你在规定时间内能打出多少本垒。
Before Gallacher could catch up with the ball, Nadlovu had beaten him to it.
在加拉赫能接住球之前，纳德洛夫就已经比他先接到了。
It's up to us; the ball is in our court." And that's the VOA Special English Education Report, with reporting by Lonny Shavelson.
VOA : special.2010.08.05
The hope here is that a huge business can provide the support and expertise needed to keep our project going, and that it will survive in institutional memory--even if the employee in charge of it today drops the ball, someone else will pick it up.
Congress nearly shut the door on trial lawyers a year ago, but it then suddenly dropped the ball and hasn't picked it up since.
"They were really on me so I really had to get the ball up - it was ugly but it flew straight and that's all that matters, " he said.