搜尋結果
ripple marks
- a system of parallel wavy ridges and furrows left on sand, mud, or rock by the action of water or wind.
noun: ripple mark, plural noun: ripple marks
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- IPA[ˈripəl märks]
- a system of subparallel wavy ridges and furrows left on sand or mud by the action of water or ...
Oxford American Dictionary