have a grip on

基本解释

This is what concerns the unions that have a grip on America’s airlines.
牢牢掌控美国航空业是这一联合关注的焦点。
"After all, most wives believe their husbands have no secret assets and they have a grip on their family purse strings, " the life insurer said.
保险公司人员指出：“总之，大部分家庭主妇相信丈夫没有私人小金库，因为她们牢牢掌握了家里的财政大权。”
“The two of you did not seem to have a grip on what was happening,” said Phil Angelides, the commission chairman. “You were either pulling the levers or asleep at the switch.”
委员会主席菲尔•安吉利德斯(Phil Angelides)表示：“你们两位似乎都不了解当时发生的事情，你们要么是在耍手腕，要么是玩忽职守。”

The problem is that they still don't have a grip on exactly how much they lost in many cases.
NPR: Bank of America Reels from Unrest in Credit Market
But feature phone performance of Nokia is little discussed and it is clear that Wall Street does not have a grip on the key Asha model line shipment numbers right now.
FORBES: Nokia's 3Q12 - Not as Easy to Game as It Seems
For example, the FDIC has the authority to wind down unstable financial firms, banking regulators have a tighter grip on setting capital standards, the Securities and Exchange Commission will have greater oversight over hedge funds and private equity firms, and the SEC and Commodity Futures Trading Commission will coordinate regulation of derivatives.
FORBES: Sheila Bair: Now the Real Work on Financial Reg Reform Begins