difficult所有形式

名詞形式是difficulty，複數形式是difficulties，例如：

1、They showed great perseverance in the face of difficulty.他們面對困難表現了堅強的毅力。

2、One of the staff saw he was in difficulty and came to his aid.一名工作人員見他有困難，便過來幫忙。

3、I think the problem can be got over without too much difficulty.我認為這個問題不太難解決