It's sensitive question.

这是个敏感的问题。

youdao

Meanwhile, PEN's application faces a sensitive question that is how to decrease the cost.

同时指出，PEN瓶之开发应用，在当前尚面临降低生产成本这个十分敏感的现实问题。

youdao

In the computer communications system, maintains the electronic documents the security to become very important and the very sensitive question.

在计算机通信系统中，维护电子文档的安全成为至关重要和非常敏感的问题。

youdao

The French president also raised another sensitive question - the value of free trade.

BBC: The French elections and Europe

Renewed exchange-rate turbulence could reopen a sensitive question: how should exchange rates be aligned in the run-up to eventual union?

ECONOMIST: Can EMU be left to stew?

And the most sensitive question will be asked by the people across Europe - why again do banks need propping up?

BBC: Euro crisis: a torrent of words, but no clarity