困难所在

That's where the shoe pinches.

那就是困难所在。

And finally, we will explain action from the physicalist view and point out its difficulties.

最后我们将从物理主义的观点来行动，并指出其困难所在。

You must bring home to Tony where the difficulty lies.

你必须使白困难所在。

The coach said he wasn’t worried about any position except quarterback;that was where the shoe pinches.

教除前场与中场的位置以外,他不担心其他别的位置;前场与中场的位置是困难所在。