简单地换上一张快乐的脸，正如古典的抒情歌曲建议的，就能创造差异。

Simply putting on a happy face, as the classic song lyric advises, can make a difference.

youdao

简单地换上一张快乐的脸，正如古典的抒情歌曲建议的，就能创造差异。

Simply putting on a happy face, as the classic song lyric advises, can make a difference.

youdao