汉译英,谢谢~

Attention please! The flight number 7120 to Washington is taking off in fifteen minutes,please get aboard the plane from the boarding gate 3.

Passengers is paid attention to , is flies to 7120 flight of Washington will hop off after fifteen minutes , is asks passengers to board the plain in 3 boarding the plain.

Fellow passengers will pay attention, fly to Washington's 7120 scheduled flights to take off after 15 minutes, ask fellow passengers to board craft in 3 gate; departure gates.

Attention, Passengers, The 7120 flights to Washington will be taking off in 15 minuets, please board at gate number at this time.

Your attention please, the Flight No. 7120 to Washington D.C. is about to leave in 15 minutes'. Please check in at the Gate 3.

机场的广播是这样的，如果我没听错的话

Attention of all passengers, please. The flight number 7120 to Washington is leaving in 15 minutes. Please board through Gate 3.

楼上的也不错。