N an artillery shell containing a flare or other illuminant: often containing a parachute to prolong the descent of the illuminating material 照明弹
South Korean officials said the latest accident took place at dawn during a military exercise when a star shell struck through two walls of an old woman's house.
韩国官员说，最新的事故是，一项军事演习昨天黎明时分出差错，一枚照明弹的弹壳击穿一个老妇家的两堵墙。
When astronomers talk about the "habitable zone," they mean the shell around a star where the temperatures are right for liquid water.
当天文学家谈及“可居住区”时，他们指的是恒星以外温度适于液态水存在的空间层。
Infrared images from the Spitzer Space Telescope (yellow, red, and green) expose a surrounding shell of dust and gas that's being lit up as the material streams through a nearby star cluster.
由斯皮策太空望远镜拍摄到的红外照片(黄色、红色、绿色部分)正好是这颗气体恒星穿过附近的星团时，所显露出的尘埃及被点燃气团的外部结构。
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