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。
4 n4 S% U( a1 D7 dEg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily.
, j2 b% E& [! K; d6 B; w& |+ B5 _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。