a background noise造句

例句与造句

1. Some people like to work with the radio on for they think that a background noise may help them to concentrate
   有些人喜欢开着收音机工作，因为他们认为背景噪音可以帮助人们集中精力。
2. It's difficult to find a background noise in a sentence. 用a background noise造句挺难的