他想看看那些摆满圣诞礼物的商店橱窗，看它们在夜晚闪闪发光。
He wanted to look at the shop windows full of Christmas gifts and see them lit up at night.
然而紫光难以获得，特别是在夜晚，也就是司机和小孩可受益于发光树叶的时候。
Violet light is hard to come by though, especially at night, when glowing leaves would be useful to drivers and pedestrians.
光污染，也称“人工白昼”，在夜晚的城镇上空均可见到这种发光现象。
Light pollution, or "sky glow", is the glow you can see at night above cities and towns.
应用推荐