Sentence examples for has proven very difficult from inspiring English sources

Since Hutus and Tutsis continue to live in close quarters, healing ethnic divisions has proven very difficult.

"We have wanted to remove this invasive pest for a long time but this has proven very difficult using currently available tools on an island the size of Grand Cayman, so we have been looking for new approaches," Petrie said.

The impotence pill has proven very difficult to sell.

However, solving this problem has proven very difficult.

Although these major types of degradation can be easily recognized, it has proven very difficult to define degradation in terms which can be used in the international agreements, and more importantly, which allow measurement and carbon accounting.

Nonetheless, providing an adequate theory to account for the FMS of unimpaired infants and cognitively impaired human beings without attributing the same status to most animals has proven very difficult.

The effort to arrest Mr. Bashir has proved very difficult and alienated some African countries.

The surface temperature of Pluto has proved very difficult to measure.

Although violence of this latter sort is definitely illegitimate and sometimes illegal, it has proved very difficult for injured athletes to find redress in the courts.

Gormenghast is immensely visual – yet it has proved very difficult to film, and the BBC version a while back did not really capture its unique atmosphere.

Wood said it has proved very difficult to assemble the comedy's ensemble cast, led by Hollander who plays the vicar Adam Smallbone.