| major issue | значительная трудность (Allen detailed some of the limitations of film cameras and how lighting would have been a major issue for the astronauts to overcome on the lunar surface. In order to light a backlit object in shadow, such as an astronaut descending the lunar lander, there must be a secondary source of light, a flash or reflector, which they did not have with them, he explained. – преодолеть такую значительную трудность, как уровень освещённости  coasttocoastam.com ART Vancouver) |
