Well, what looked like tracer going past the door of the window.

好吧，看起来像是从窗户边的过。

But also tracer rounds being fired from multiple enemy aircraft guns.

但也有来自多架敌机机枪的被射出。

The spangled tracer swung lazily up into the sky just below the speed of sound.

闪闪发的略低于音速的速度懒洋洋地升上天空。

On the wings of the aircraft, we've got flares, which when we fire the flares, it burns and it emits a smoke.

机翼上装有，一旦发射，会燃烧并释放烟雾。