| 单词 | formation |
| 释义 | formation n. 1. the act or an instance of forming; the process of being formed. 2. a thing formed. 3. a structure or arrangement of parts. 4. a particular arrangement, e.g. of troops, aircraft in flight, etc. 5. Geol. an assemblage of rocks or series of strata having some common characteristic. Derivatives formational adj. Etymology: ME f. OF formation or L formatio (as FORM) |
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