A dragonfly is an insect belonging to the order Odonata, infraorder Anisoptera (from Greek á¼âýùÃÆÿÃâ anisos, unequal and Ãâ¬ÃâõÃÂÃÅý pteron, wing, because the hindwing is broader than the forewing). Adult dragonflies are characterized by large, multifaceted eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Dragonflies can be mistaken for the related group, damselflies (Zygoptera), which are similar in structure, though usually lighter in build however, the wings of most dragonflies are held flat and away from the body, while damselflies hold their wings folded at rest, along or above the abdomen. Dragonflies are agile fliers, while damselflies have a weaker, fluttery flight. Many dragonflies have brilliant iridescent or metallic colours produced by structural colouration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each.
圖片編號:
210854784
拍攝者:
Savinulakwan
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 320 x 480 | JPG | 13 | |
標準授權 | S | 533 x 800 | JPG | 15 | |
標準授權 | M | 1413 x 2122 | JPG | 18 | |
標準授權 | L | 1824 x 2740 | JPG | 20 | |
標準授權 | XL | 2307 x 3466 | JPG | 22 | |
標準授權 | MAX | 3632 x 5456 | JPG | 23 | |
標準授權 | TIFF | 5136 x 7716 | TIF | 39 | |
進階授權 | WEL | 3632 x 5456 | JPG | 88 | |
進階授權 | PEL | 3632 x 5456 | JPG | 88 | |
進階授權 | UEL | 3632 x 5456 | JPG | 88 |
XS
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M
L
XL
MAX
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標準授權 | 320 x 480 px | JPG | 13 點 |
標準授權 | 533 x 800 px | JPG | 15 點 |
標準授權 | 1413 x 2122 px | JPG | 18 點 |
標準授權 | 1824 x 2740 px | JPG | 20 點 |
標準授權 | 2307 x 3466 px | JPG | 22 點 |
標準授權 | 3632 x 5456 px | JPG | 23 點 |
標準授權 | 5136 x 7716 px | TIF | 39 點 |
進階授權 | 3632 x 5456 px | JPG | 88 點 |
進階授權 | 3632 x 5456 px | JPG | 88 點 |
進階授權 | 3632 x 5456 px | JPG | 88 點 |