An instance of this; also, a single rise and fall of this nature.
| 单词 | θ99712 |
| 释义 | the world > space > shape > unevenness > [noun] > undulating form > instance of (2) undulation1823 An instance of this; also, a single rise and fall of this nature. up and down1856 An irregularly undulating surface, lineation, etc. |
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