21.   But the relatively low amount of energy that they can deliver for a given mass of fuel is a severe drawback when dispatching spacecraft over long distances.

22.   People travelling long distances frequently have to decide whether they would prefer to go by land, sea, or air.

23.   As described by radiological methods, mass movements define an infrequent, aborally propagated displacement of colonic contents for long distances along the viscus.

24.   Some studies, however, suggest that low amplitude waves may also propagate over relatively long distances and may move colonic contents.

25.   How did people travel such long distances around the country?

26.   Whenever possible laser and radiotherapy were performed on an outpatient basis although many patients came from long distances so radiotherapy had to be given as an inpatient.

27.   He suffered back and hip injuries, and can no longer walk for long distances.

28.   He says research has shown that many people would be incapable of driving safely over long distances in the early afternoon even after one drink.

29.   Mr Thompson said butchers would be unhappy if their meat had to travel long distances.

30.   And light emanating from the strands loses little of its power over long distances.