a source of
-eg: Car emission is a source of air pollution and difficult to be dispose of in short time.;
there are some reasons why;
because of;
partly because-largely because;
therefore/hence
【雅思写作常用词汇:来源】相关文章:
★ 关注雅思写作要点
最新
2016-10-19
2016-06-13
2016-06-13
2016-06-13
2016-06-13
2016-06-13