CNN news 2010-08-22 加文本

例句：The ship was underwater when they reached her.
      他们赶到那艘船时, 船已沉到水里了。

2.raise v.增加; 提升

例句：They raised their output by more than half in less than three years.
      不到三年, 他们把产量提高了一半还多。

      We must do everything we can to raise the people's living standards.
      我们要想一切办法来提高人民的生活水平。

3.humanitarian a.人道主义的,博爱的,相信基督为凡人的

例句：Salute an organization for its humanitarian work.
      赞扬某组织的人道主义工作

4.commitment n.承诺, 许诺, 保证

例句：He made a commitment to pay the rent on time.
      他保证按时付房租。

承担的义务

例句：I am very tired because I have taken on so many commitments.
      我很累, 因为我承担了很多的事情。