'he continued:' the outer bow (2), the one we also see sometimes, comes when sunlight reflects twice in each raindrop.
最外层的那道彩虹(图示2)是在太阳光在每滴雨滴内反射两次形成的。
'he continued:' the outer bow (2), the one we also see sometimes, comes when sunlight reflects twice in each raindrop.
最外层的那道彩虹(图示2)是在太阳光在每滴雨滴内反射两次形成的。
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