It is a hard nut for him to crack.

这对他而言是一个。

He embarrassed me with a difficult question.

他出了一道我住了。

She handles this difficult subject with a light touch.

她处理起这种心应手。

Will the negotiators be able to untie the Gordian knot?

这些谈判者能够果断地解决这个吗？

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

他全神贯注地在算那道数学。

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

你最钦佩人是谁？这可是个。

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

这个关于环境保护棘手新任市长住了。

He put forward a baffling question.

他提出了一个。

The dilemma presented quite a poser.

困境给人很大。

I challenged him to make good his boast.

我给他出了个，让他兑现自己夸下海口。

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

我刚才灵机一动,突然想出了一个解决这一新办法!

Inflation is the Government’s main bugbear.

通货膨胀是政府主要。

He is meeting the tickler successfully.

他在顺利地处理着这。

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。

You've posed an awkward question.

你已经提出了一个。

It's a hellish problem.

这是一个令人讨厌。

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

“一个长期令我们费解，在于判定巨猿曾经存在时间。”

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

扭转牙复发是正畸临床治疗后牙稳定性之一。

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

这确是个，从媒体，教练，球探或者球队经理们那里出答案都各不相同。

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

而要使卫星发射出巨大微波束与地面网格形天线一直保持同步，也是一个尚未解决技术。