stratus
n.
"a low layer of cloud," 1803, from Latin stratus "a spreading," from noun use of past participle of sternere (see stratum).
| 词汇 | stratus | 
| 词根词缀 | Online Etymology Dictionary stratus n. "a low layer of cloud," 1803, from Latin stratus "a spreading," from noun use of past participle of sternere (see stratum). | 
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