一直想要那种真实长曝的极光——不是死绿一片，而是绿里透紫、边缘有拉丝。折腾了好几轮，关键是把湖面反射和星空曝光分开描述，不然它老是把星星糊进极光里。
Northern lights dancing over a frozen Scandinavian lake, vivid emerald green curtains fading into violet and magenta at the edges, long exposure streaking motion, crisp star-filled sky with faint Milky Way band, mirror-like reflection on the ice surface, snow-dusted pine treeline as silhouette, distant cabin with a single warm window light, cold blue ambient tone, ultra wide angle, deep focus, high dynamic range night photography
负面词那边我会压 oversaturated 和 hdr 过头的味道，不然紫色会脏。