托福写作：加分句之同位语从句

会计考友

Eg: It is an undeniable fact that environmental pollution becomes increasingly serious.环境污染变得越来越严重是不可否认的事实。
2 l1 |* M" x, O% u8 s/ r% F  b% rEg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.
没有人能否认这一基本事实：对于一般工人来讲，轻松掌握这些技术是不可能的。