I simply couldn't comprehend what had happened.

我简直不明白什么事。

It was impossible to break through her barricade of reticence.

要打破她沉默的“壁垒”简直是不可的。

There were so many people in the doorway that we could hardly get out.

门口那么多人, 我们简直走不出去。

We get treated like shit in this job.

干这个活儿简直不把我们当人看。

It’s almost impossible to criticize the plan without treading on somebody’s toes.

要批这个计划又不得罪任何人简直是不可的。

I simply don't believe that spoken skills can be drilled into learners in a language laboratory.

我简直不相信语言实验室里够把说话的技传授给学。

It's next door to impossible.

这简直不可。

Things are in a real pickle at the moment, I’m afraid. My assistant’s left and I’m completely lost without him!

我真是处境窘迫，我的助手离开，没有他我简直不知道从何下手。