European legislation dictates that any oil labelled virgin must have been extracted from the olive by physical means , such as pressing , rather than by chemical refinement .
The engineer in charge was convinced that , with further refinement , the sewage works would be capable of recycling the same water indefinitely-with the quality improving with each treatment cycle .
Because the ipad 2 is a refinement of the original , rather than a complete makeover , some analysts had expected the lines of consumers waiting to buy it to be shorter this time .
Among the romantics and the victorians , suffering and dying from tuberculosis might be considered a badge of refinement ; cancer death was nothing of the sort .
Although the new moblin shell will require more polish and refinement before it is ready for deployment on consumer hardware , it 's an enormously impressive step in the right direction .