| 词汇 | swale |
| 词根词缀 | 词源： "low, hollow place, often boggy," 1584, special use of Scottish swaill "low, hollow place," or dialectal East Anglian swale "shady place" (c.1440); both probably from O.N. svalr "cool," from P.Gmc. *swalaz. |
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