| 单词 | trough limb |
| 释义 | > as lemmastrough limb trough limb n. Geology = trough-joint n. ΚΠ 1911 Encycl. Brit. X. 598 In a fold of this kind we have an ‘arch limb’, a middle limb, and a floor or ‘trough limb’. < as lemmas |
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