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But one of the trickiest and most subtle problems remains .

但仍存在一个最为棘手和微妙的问题。

That may be the trickiest question of all .

这也许才是最棘手的问题。

A constitutional convention may be needed to push through the trickiest reforms .

也许需要动用宪法惯例来促成这些最棘手的改革。

In which case , turning the phone lines on becomes the trickiest part .

在这种情况下，连通就成为了最棘手的事情。

From a dictator 's perspective the markets may be the trickiest issue to manage .

从一个独裁者的角度来说，市场可能是最棘手的一个问题。