It is difficult to prove a negative.

It is difficult to prove discrimination based on labor.

Such cases were often difficult to prove beyond a reasonable doubt in court.

The application of the above criterion to a given case may prove difficult.

Some provisions of the draft convention could prove difficult to reconcile provisions of Directive 2000 31 EC

It is difficult to prove that fragmentation is being effected for tax purposes and for no other valid reason.

It was similarly noted that, although eliminating the effective link requirement sounded simple in principle, it might prove to be difficult in practice.

Some grey areas and potentially difficult issues remain where the parties may have differing interpretations of the texts that could prove controversial at a later stage.

The requirement to work in partnership with a local partner may prove particularly hard to fulfil, finding a suitable local partner often being more difficult than perceived.

If current levels of low investment and high unemployment continue, especially in the more diversified economies, they may prove difficult to reverse when the social consequences become evident.

You prove one, you prove the other.

Compliance with this type of obligation may prove difficult for an international organization when action presupposes that a certain majority is reached within a political organ of the organization.

Defending the Security Council s current make up is impossible the need for change is beyond debate. But coming up with an approach that gains broad international support will prove extremely difficult.

Since, when negotiating treaties, States did not usually consider the effect that going to war might have on a given treaty, their intention in that regard might be absent or difficult to prove.

It is difficult for an individual to establish that discrimination based on sex has occurred, since it is often complicated to prove that a person has been placed in a less favourable position because of gender.

I couldn't prove it.

Can you prove it?

Prove it by experiment.

You can't prove that.

Some delegations also observed that the provision raised practical problems, since the identification of the nationality of shareholders would prove difficult, and might generate a multiplicity of claims against the State presumed to have caused the injury.

They foresee years and even decades of slow growth in Europe. Politically, too, the process of adjustment by deflation in deficit countries is so unpleasant and difficult that many pessimists think it will ultimately prove to be unsustainable.

I'll prove it to you.

Mathematicians love to prove things.

Allocating new SDR s also is inappropriate. Above all, SDR s represent liquidity and can be allocated only if and when there is a global need, which would currently be difficult to prove given highly liquid and easy international capital market conditions.

Supplying products to mega firms can prove difficult for small producers and providers, including because of stringent requirements for value, quality, specifications and certification, all of which may be hard to meet, particularly in the light of SMEs' resource constraints.

And he said, I'll prove it.

Mathematical problem how to prove it?

Correlation in itself doesn't prove causality.

Are you able to prove it?

It takes time to reach a decision on whether or not to invest in a project, and once an investment decision is made, it becomes rather difficult to stop the process quickly. Russia s government is now doing its best to prove that, while difficult, it is possible to defy the laws of business physics and kill investments that are already in the pipeline.

I'll prove them wrong on both points.

That's progress when we prove things wrong.

He believes that he can prove it.

So for one whose scales prove heavy,

And for one whose scales prove light,

So for one whose scales prove heavy,

And for one whose scales prove light,

Europe split over the American invasion of Iraq, and there is no political will to involve NATO there. The new relationship with Russia needs careful management, and rapid extension of membership to former Soviet republics like Ukraine and Georgia could prove difficult.

But, as we have seen elsewhere in the region, it will prove far more difficult to put something benign and effective in its place. Civil war along sectarian lines could well predominate, or fighting between the various anti Assad opposition groups could erupt.

Our people prove that the majority want democracy.

Unfortunately this is not always easy to prove.

This is a relatively modest prediction. Without automatic stabilizers or a strong financial stability framework underpinned by deposit insurance, coping with the downside risks of the potentially destabilizing financial reforms that the government is pursuing will be difficult enough a credit shock could prove disastrous.

And to prove it, she says, The exact size and shape of these tabletops is the same, and I'm going to prove it to you.

And of a surety We shall prove you all until We know the strivers among you and the steadfast, and We shall prove your states.

And of a surety We shall prove you all until We know the strivers among you and the steadfast, and We shall prove your states.