I can't give you anything more than just sort of a ballpark figure.

我只能给你一个大概的数字。

《柯林斯英汉双解大词典》

That is a low ballpark figure.

那是一个比较保守的数字。

youdao

Give me a ballpark figure.

给我个大概数字。

youdao

Philip Price, deputy leader of the council, said 100 job loses would be "the ballpark figure".

BBC: Herefordshire Council cuts: More jobs could go

The ballpark figure for strengthening the banks will be around 100bn euros.

BBC: Europe's 'big bazooka'

The decision comes on the heels of a report from Google that for the first time gave a ballpark figure of the number of its users targeted by NSLs over the last four years.

FORBES: Here's The Judge's Order Banning The FBI's Secret Requests For Companies' User Data