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单词	pennate
释义	pennate /ˈpɛnət / adjective Botany (Of a diatom) bilaterally symmetrical. Compare with centric.The major source of the spring diatom pulse was Skeletonema potamos and a variety of centric and pennate diatoms.... Diatoms are photosynthetic protists, which are classified into centric and pennate diatoms, according to whether they have a radial or bilateral symmetry. Both articulated and broken pennate diatoms, up to 12 m long and 4 m wide, are scattered throughout the stromatolitic sinters. Origin Mid 19th century: from Latin pennatus 'feathered, winged', from penna 'feather'.
随便看	waiata waif waifish waiflike Waikato Waikiki wail wailer wailful wailingly Wailing Wall Waimea Canyon wain Wain, John wainscot wainscoting wainscotting wainwright Wainwright, Jonathan Mayhew Waipahu wairua WAIS waist waistband waist cloth

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