1.
a dark region of considerable extent on the surface of the moon.
月亮表面一块相当大的阴暗区域。
2.
A dark area, especially the blackest part of a shadow from which all light is cut off.
阴影黑暗的地区，尤指所在光线都被隔绝的阴影中的最黑暗的区域
3.
Crookes dark space
克鲁克斯暗区; 阴极暗区; 第二阴极暗区
4.
A broad, level expanse, as a part of the sea floor or a lunar mare.
广阔的区域作为海底或月球阴暗部的平坦、水平或开阔的区域
5.
Special note: The dark grey shaded area on this graph is a duplication of symbols from the graph on page 6.
特殊注解：此图中暗灰色阴影区域是第6页的图中的符号的复制。
6.
A partially or totally dark place, area, or location.
黑暗处，阴暗处部分或全都黑暗的地方、地区或位置
7.
A period of darkness and gloom.
一段黑暗阴暗的时间
8.
the languor of the sky
沉闷 [阴暗] 的天空
9.
The darkest region of a sunspot.
太阳黑子中的最黑暗的区域
10.
The hair that appears on this region at puberty.
阴毛青春期时出现在这个区域的毛
11.
This is a lighter area between the umbra and the edge of a shadow.
这是本影和阴影边缘之间较亮的区域。
12.
The cathode rays are always beamed on a fresh area of the anode surface.
阴极射线总是射向阳极表面的新区域。
13.
Practice of Regional Cathodic Protection in Shaanjing Pipeline
区域阴极保护在陕京管道站场的应用
14.
a dark day; a dull sky; a gray rainy afternoon; gray clouds; the sky was leaden and thick.
阴天；阴暗的天空；阴暗的、下着雨的下午；阴云；天空阴沉。
15.
Any of the large dark areas on the moon or on Mars or other planets.
（月）海任一月亮、火星或其它行星上的大块阴暗的地区
16.
The bullhorn acacia is not a tree of the dark windless depths of the tropical rain-forest.
牛角相思树不喜欢在阴暗不透风茂密的热带林区中生长。
17.
A child born in the far north is soon conditioned to the long cold dark winters.
出生在北部边远地区的孩子很快就习惯于那漫长、寒冷、阴暗的冬季。
18.
Drop Shadow Button\\015\\015Adds a shadowed rectangle around the selected cells or adds a shadow to the border of the selected objects.
在选定区域的外围添加阴影，或在选定对象的外围绘制阴影。