The difficulties will only grow more acute in the next few years as old boats fail and replacements are not ready.

Although the mortgage was paid off and the building donated to the school in 1929, financial difficulties inevitably grew during the Great Depression.

As those difficulties grew more obvious last week, interest rates on long-term Mexican Treasury certificates jumped above 19 percent, their highest level of the year.

For a given design the difficulty of construction grows roughly as the square of the diameter of the objective.

If there are long periods of time with no progress these difficulties will grow greater.

Even with 10 hours of practice each week, the difficulty of mastering the instrument grew apparent, and his optimism dissolved.

The difficulties, according to economists and executives who outlined them, have grown more serious since the stock market collapse last October.

Having difficulty growing any plants underneath the deep shade of certain trees?

The difficulty of the class grows over the course of a week.

It is clear that under the Schengen Agreement, these difficulties are growing out of all proportion.