major obstacle
serious obstacle

The major obstacles to this are time, money and political will.

Of course, there are some major obstacles in the way.

Until recently, two major obstacles have stood in the way.

"And various times I considered him one of our major obstacles."

But two major obstacles stand in the way: money and management.

Lack of support from parents is often a major obstacle.

Especially the difficult supply situation was thought to be a major obstacle.

He simply pointed out a major obstacle of which I knew nothing.

The last major obstacles were cleared away more than 15 months ago.

After an hour on the plain, they came to their first major obstacle.

Fuel is a major obstacle, as running out of it results in game over.

This policy has proved to be a major obstacle to peace.

"I think we all know what the major obstacle is.

There are still major obstacles in the way of this social aim.

I still see major obstacles ahead, to be sure, but we shall make it.

The issue was expected to be the major obstacle to any agreement being reached.

To get even this far, the technology has had to overcome several major obstacles.

It is a major obstacle to the widespread use of this technology.

A major obstacle, they say, comes even in defining what it is to be.

But the major obstacle is how to think of Germany in such a context.

Among university students, 50.1 percent saw America as the major obstacle to peace in the peninsula.

The last major obstacle to that dream has now been removed.

The developments face major obstacles even if they meet environmental standards.

To the present day it remains the major obstacle for a settlement.

The deal removed a major obstacle to Senate action on the measure.

It is taking some time, but I do not see any serious obstacles.

However, there are a few serious obstacles in the way of his return.

For now, the most serious obstacle to the project appears to be political.

In the years to come, he faces more serious obstacles.

This difference is a serious obstacle in building a common identity.

Vines can be a serious obstacle even for those who simply want to get past them.

In the short term, perhaps the most serious obstacle is a problem of deep theory.

A serious obstacle, as I suspect, in the way of her marriage.

A serious obstacle was the lack of funds with which to buy arms.

Those who were not able to master a foreign language faced serious obstacles.

There are serious obstacles to overcome at the current talks.

But this seems to represent the most serious obstacle, executives said.

Moreover, serious obstacles exist now that were not present in 1996.

On the other hand, there was no doubt of serious obstacles to overcome.

The official speaking today said such a test would create "serious obstacles to peace."

The companies and the government can try to resurrect the deal next year, but they face serious obstacles.

The difference in their ages makes them a little nervous, but the more serious obstacle comes from David's family.

At the same time several pioneers in the field say Microsoft may face serious obstacles.

She argues that women continue to face serious obstacles to full participation in public life.

But finding the money to reach and train all the children who need help remains a serious obstacle, they say.

But the company still faces serious obstacles that could stall its success.

But serious obstacles remain before a housing program can be enacted.

His expansionist drive was to run into serious obstacles however.

The new systems face serious obstacles, beginning with how to create tests that measure job skills.

"If they are set too high, they can be a serious obstacle to health information."