CNN news 2010-01-20 加文本

1.This is just one of the locations where rescue teams have been frantically working, trying to dig out survivors still alive after nearly five days under the rubble.

dig out挖出,救出,发掘出,开垦

例句：We are expecting to dig out some important facts.
      我们希望能找出一些重要的事实。

2.One of the obstacles that we're having now is this one has become much more difficult, the stakes are much higher due to the fact that we have an area of the structure that has somewhat collapsed.

more difficult是多音节单词difficult的比较级形式，much修饰比较级。可以修饰比较级的词语有：

1）a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等

2）还可以用表示倍数的词或度量名词作修饰语。

3）以上词(除by far)外，必须置于比较级形容词或副词的前面。