- 重点词汇
- 唱歌
sing; chant; carol; vocalize; sing a song; vocal; singing; song; vocalization
- 录音
record; tape; recording; sound recording; audio recording
- 软件
software
- 免费
free; complimentary; gratis; courtesy; be free of charge; cost free; cost a dime; cost a penny; for free; at no cost; without payment; grant free of charge
- 下载
download; downloading