1、
The seriousness of the situation is difficult to appreciate in its totality .
很难从全局上理解局势的严重性。
《牛津高阶英汉双解词典》
2、
We'll find these students truely having a difficult time when we think back of their situation.
其实我们回过头来想想,这些留美高中生其实也非常不容易.
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3、
使自己适应一种新的情况并不难，但要使自己适应一个新的文化和一种新的生活方式却是极其困难的。
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