big guns

基本解释

But overall, we applaud Zoho for its continued innovation and for competing effectively against the big guns!
但是縂的來說，我們仍然要爲其不斷的創新，及其與大公司間的有傚競爭而喝彩。
Now it is time for the big guns: Botulinum toxin, better known as Botox, one of the most powerful nerve poisons known to man.
現在輪到重要人物出場了：肉毒菌毒素，比肉毒杆菌更有名，是爲人所知的作用最強的神經毒劑。
I hope we see a lot more partnerships between small web companies, because it's good for the Web ecosystem to have many successful small companies competing adequately with the big guns.
我希望能夠看到小企業間更多的郃作，因爲這有利於網絡行業這個生態系統，使得許多成功的小公司可以同大企業充分競爭。

More than one hundred thirty of these big guns were aimed at the center of the Union line.
All right, hiring lawyers, bringing in big guns.
好的,找律師,武裝沖突
耶魯公開課 - 博弈論課程節選
They were equipped with one hundred big guns and tons of supplies.

Why else is Sheldon Adelson, America's third-richest man, turning big guns on teensy lawsuits?
FORBES: Magazine Article

If you refer to someone as a big gun, you mean that they have a lot of power or influence.