And that is where things get very complicated.

As the number of people in a given area increase, so does the number of interactions, and the society becomes more complex.

A resolution to the problem was more difficult than we anticipated.

When finding source material becomes too difficult, some teachers have decided to make their own.

Even as Asia is becoming more interdependent economically, it is becoming more politically divided.

Now, the going gets tougher.

Monetary policy is a more complex and difficult balancing act. A more aggressive interest rate policy would likely reduce asset prices (or at least slow the rate of appreciation), increase adjustable rate debt service burdens, and trigger additional balance sheet distress and disorderly deleveraging, such as foreclosures.

But success in Cairo might prove even more challenging.

Monetary policy is a more complex and difficult balancing act.

Their communication may be much more complex than we thought.

Employment is increasingly precariousness.

Naked yoga is becoming increasingly popular.

Our website seems to be getting more popular.

But spurring faster growth in services is a complex undertaking.

Indeed, as Hong Kong s society has grown more sophisticated, it has also become more complex, multi faceted, and pluralistic.

The prospects of a stable future look increasingly dim.

Finally, the Treaty will make Europe more effective.

As it happens, the Chinese Communist Party is becoming more meritocratic.

National sovereignty is becoming an ever more elusive concept.

Nail after nail, the conversation becomes more animated.

The EU's unity is gradually becoming shakier.

As he gets older, he's getting more and more stubborn.

He's getting more and more stubborn with age.

The older Mary gets, the more unbearable she becomes.

The optimist looks into a mirror and becomes more optimistic, the pessimist more pessimistic.

Moreover, the general image of Iranian women suppressed behind their black chadors is more complicated than it first seems.

Order seems to be the name of the biological game, and evolution leads to more complex organisms and more organized structures.

The proper responses are also increasingly understood.

From a broader geopolitical perspective, the situation becomes alarming.

In other words, the international order is becoming more pluralistic.

The situation is even more discouraging when we look at the particulars.

Biking is becoming more and more popular in North America.

The government candidate, José Serra, would be a much more difficult opponent than Ciro Gomes.

In 2013, Sam s day would have been far more difficult, stressful, and expensive.

Now, the Cold War is part of history, and everything seems more complicated and less heroic.

The refugee crisis is all the more challenging in view of EU member countries internal political fragmentation.

After all, it is a fundamental premise of the theory of secularization that the more modern a society, the more secular it becomes.

The equation was very difficult.

The hardest part?

I found the test difficult.

Tom found the test difficult.

This seems very difficult!

In some disciplines it is becoming difficult to find academic scientists who are not in some way dependent on corporate support.

The alliance forged in the Cold War will become increasingly fragile.

A more difficult issue for Hu could be intellectual property rights. China s recent campaign to crackdown on pirating needs to be encouraged, but far more needs to be done.