word count

例句：

1. 1.The teacher asked us to count the numberof words in our compositions.
   老师要求我们数一下我们作文中有多少个单词。
2. 2. The researcher counted the number ofwords in the article to determine its length.
   研究员计算了文章的字数来估计其长度。
3. 3. The writer counts the number ofwords in her book to see how manypages it has.
   作家数了一下她书里的字数，看看它有多少页。