- 重点词汇
- 天下
land under heaven; the world; the earth; the whole world; the whole country; all over the world; in the world; under the sun; between heaven and earth
- 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