long standing problem

A long standing problem with Microsoft's implementation of the CLR is that only one can be loaded into a process at a time.

The weakness of English education in rural areas has been a long-standing problem, and the reason varies.

Electro-slag welding for the lamellas of the steel box structure is a difficult and long-standing problem at home.

Some difficult bilateral security issues -- such as the long-standing problem of U. S. military bases on Okinawa -- remain.

With Smolyaninov and Hung's setup, researchers could study the thermodynamic arrow of time, a long-standing problem in physics.

The quality of fruit wine is affected seriously by oxidative browning, which is a long-standing problem in wine production.

The growth of farmers'income remains a long-standing problem.

China's monopoly is a long-standing problem.

And it is a long standing problem to simplify their strength calculation.

This is a controversial long-standing problem.

A long-standing problem is the lack of essential procurement and regulatory capacities in many developing countries.