难题

It is a hard nut for him to crack.

这对他而言是个难题。

He embarrassed me with a difficult question.

他道难题把我难住。

She handles this difficult subject with a light touch.

她处理起这种难题来得心应手。

Will the negotiators be able to untie the Gordian knot?

这些谈判者能够果断地解决这个难题吗？

He is absorbed in the calculation of that difficult maths problem.

他全神贯注地在算那道数学难题。

Who do you admire most? That's a toughie.

你最钦佩的人是谁？这可是个难题。

This thorny problem on the environmental protection floored the new mayor.

这个关于环境保护的棘手难题把新任市长难住。

He put forward a baffling question.

他提个难题。

The dilemma presented quite a poser.

困境给人很大的难题。

I challenged him to make good his boast.

我给他个难题，让他兑现自己夸下的海口。

I've just had a brainwave; I know a new approach to the difficult problem!

我刚才灵机动,突然想个解决这难题的新办法!

Inflation is the Government’s main bugbear.

通货膨胀是政府的主要难题。

He is meeting the tickler successfully.

他在顺利地处理着这难题。

On the surface she can be very pleasant and helpful, but underneath she’s got problems.

表面上她亲切和气又乐于助人，可实际上她也有难题。

You've posed an awkward question.

你已经提个难题。

It's a hellish problem.

这是个令人讨厌的难题。

"A missing piece of the puzzle has always focused on pin-pointing when Gigantopithecus existed," said Rink.

“个长期令我们费解的难题，在于判定巨猿曾经存在的时间。”

The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.

扭转牙的复发是正畸临床治疗后牙稳定性的难题之。

That was a stumper. We brought experts from the media, coaches, scouts, a GM or two. Nothing.

这的确是个难题，从媒体，教练，球探或者球队经理们那里得的答案都各不相同。

And keeping the satellite's huge beam and the distant rectenna reliably synced up also stands as an unsolved technical issue.

而要使卫星发射来的巨大微波束与地面的网格形天线直保持同步，也是个尚未解决的技术难题。