【简答题】This “ noctilucent cloud ” occasionally appears when the earth is first cloaked in the evening darkness; shimmering above us with a translucent whiteness, these clouds seem quite unnatural. (Para. 7)
【简答题】翻译成中文:This "noctilucent cloud" occasionally appears when the earth is first cloaked in the evening darkness; shimmering above us with a translucent whiteness, these clouds seem quite unnatural.