None of us is afraid of difficulties. none “沒有人”： difficulty 困難

None of us is afraid of difficulties.
我們當中沒有一個人害怕困難。

none “沒有人”：

None of you can get the scholarship.
你們沒人能得到獎學金。

be #afraid of ...害怕
I'm afraid of bugs.
我害怕蟲子。

difficulty 困難

He spoke slowly and with great difficulty.
他話說得很慢，而且很喫力。