But getting interview slots is proving to be difficult .

但事实证明要成功约到面谈很难。

Proving such ties could be difficult .

要证明这种关联可能是比较困难的。

Events seem to be proving him right .

局势的演变似乎证明他是对的。

Proving their worth is a daunting task .

证明它们的价值是个使人畏缩的任务。

But it is proving effective .

但却被证明是卓有成效的。