我发现他绝非等闲之辈。

I've found that he is by no means ordinary.

那老板非等闲之辈，不可小看。

The boss is not a person to be trifled with.

他在城里默默无闻，我想他在本村却非等闲之辈。

He's nobody here in town but I suppose he's a somebody in his own village.

他在这城里默默无闻，但我猜想在他本村中并非等闲之辈。

He is nobody here in town but I suppose he's a somebody in his own village.

这样看来，朱利安·阿桑奇还是不是等闲之辈啊。

So, Julian Assange: Still not really that much like us.