Teenagers often have difficulty expressing themselves.
十来岁的孩子在表达思想方面常常有困难。
They showed great perseverance in the face of difficulty.
他们面对困难表现了坚强的毅力。
We're having difficulty keeping up our mortgage payments.
我们难以继续偿还按揭贷款。
Something gave me the strength to overcome the difficulty.
有件事给了我克服困难的勇气。
The patient was perceived to have difficulty in breathing.
发现病人呼吸困难。