The center of the umbra is much darker than its edges, " it says.
阴影的中心要比边缘暗得多，”杂志上说。
Deep Umbra: the aspects of the Umbra far beyond Earth, in deep space.
深影界：影界远离物质界的一面，位于深层空间。
When this happens, the umbra cannot reach Earth and an antumbra shadow is created over the planet's surface.
当这种情况发生的时候，本影无法到达地球，非本影阴影就会出现在地球表面。
应用推荐