| 单词 | altostratus |
| 释义 | altostratus /al'toh stray"teuhs, -strat"euhs/, n. , pl. altostratus. Meteorol. a cloud of a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus: of medium altitude, about 8000-20,000 ft. (2450-6100 m). [1890-95; ALTO- + STRATUS] |
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