如果你仔细听这首曲子，你能在背景中听到长笛声。

If you listen carefully to this piece of music, you can hear a flute in the ___background.

轻柔播放的东方音乐营造了轻松的氛围。

The oriental music playing softly in the ___background created a relaxing atmosphere.

当背景中一直有喋喋不休的说话声时，我发现很难集中注意力。

I find it hard to concentrate when there's constant chatter in the ___background.