I'm going to file a formal protest!

我要提出正式抗议！

The United Arab Emirates has summoned the Qatari ambassador to lodge a formal protest about sermons broadcast from Qatar by a well-known Islamic preacher.

阿拉伯联合酋长国已召见卡塔尔大使， 就一位著名的伊斯兰教传教士从卡塔尔广播的布道提出正式抗议。

He said the jet made several close passes in an apparent attempt to show off its weaponry. The US says it’s lodged formal protest with the Chinese government.

他说，这架喷气式飞机几次近距离掠过，显然是为了炫耀其武器装备。美方称已向中国政府提出正式抗议。

A " formal protest" would be an official complaint where you write a letter or you go talk to someone complaining about the way someone acted or someone behaved.

“正式抗议”是正式投诉，您可以写信或与某人交谈，抱怨某人的行为方式或行为方式。