noise behind the signal

例句：

1. 1. The construction site was a noisy place to work.
   施工现场是个嘈杂的地方。
2. 2. The loud noise woke her up.
   那响亮的声音把她吵醒了。
3. 3. The children were playing in the garden, creating a lot of noise.
   孩子们在花园里玩耍，制造了很多噪音。