自然光源 meaning in English

daylight source
lamp
natural light source
source of natural illumination

The colour of a burmese ruby is regarded as exceptionally vivid . it is said to display its unique brilliance in any light , be it natural or artificial
强烈的生气和浓艳的色彩，使它无论在自然光源还是人工光源下总能发出独特浓艳的光芒。
Many gemstones change their colour depending on the light source . a true rubellite does not . it shines just as intensely in artificial light as it does in daylight
事实上，许多宝石的颜色会因自然光源或是人工光源不同而改变，但既使是在不同的光源之下，红色
And in view of the fact that this colour always changes somewhat between the bright light of day and the artificial light of a lamp , emerald green retains its lively vigour in all its nuances
,绝不单调。即使祖母绿的绿会因晴天或阴天，自然光源还是人工光源不同而改变，但它总是生动地发出不同柔和又浓艳的光芒。