Try to imagine how frustrating his life must be.

你试想一下他生活是多么地令人沮丧啊。

Even then the next few weeks and months are almost certain to be frustrating, dangerous and messy.

不过即便如此，未来几周甚至几月都会毫无疑问地令人沮丧、充满危且混乱不堪。

Technological progress is often frustratingly slow and littered with false promises and mistaken assumptions about what people want.

技术进步通常令人沮丧地缓慢，并且充斥着虚假承诺和对人们需求错误假设。

Moreover much corporate spying can be from the point of view of those being spied on frustratingly fuzzy.

此外，从被监角度来看，许多企业间谍活动可能令人沮丧地模糊。

And the other is that many students learning about groups for the first time can find them frustratingly opaque, I know I did.

另一个是， 许多第一次学习群体学生会发现它们令人沮丧地不透明，我知道我确实如此。