Away from this cirrus shield some low-level spiral cloud lines can also be clearly seen.
离开这片盾状卷云层又可清楚地看到一些低层螺旋云带。
The complex is called the Vela Molecular Cloud Ridge, and may form part of the edge of the Orion spiral arm spur in the Milky Way galaxy.
这片复合区域被称为船帆分子云脊（Vela Molecular Cloud Ridge），它可能参与形成了猎户座悬臂的边缘部分。
Cloud photographs from spacecraft orbiting the earth are received in Maryland and are studied for che telltale spiral on the warming sea.
马里兰州还接收从在地球轨道飞行的太空船发回的云图，研究在温暖海洋上空的那些先兆性气旋。
Cloud photographs from spacecraft orbiting the earth are received in Maryland and are studied for che telltale spiral on the warming sea.
马里兰州还接收从在地球轨道飞行的太空船发回的云图，研究在温暖海洋上空的那些先兆性气旋。
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