Any of various large water beetles.
| 单词 | θ35757 |
| 释义 | the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Coleoptera or beetles and weevils > [noun] > member of (beetle) > aquatic (3) water clock1634 Any of various large water beetles. Subcategories:— that swims on it's back (2) |
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