单词 | fly |
释义 | fly [flī] INVERTEBRATE ZOOLOGY The common name for a number of species of the insect order Diptera characterized by a single pair of wings, antennae, compound eyes, and hindwings modified to form knoblike balancing organs, the halters. MECHANICAL ENGINEERING A fan with two or more blades used in timepieces or light machinery to govern speed by air resistance. |
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