单词	tetraxon
释义	tetraxon noun te·​trax·​on te‧ˈtraksän plural -s : a tetraxial sponge spicule Word History Etymology tetra- + Greek axōn axle, axis
随便看	ladder tournament ladder track ladder truck ladder-back ladder-backed laddered laddering ladderless ladderlike ladderman laddermen ladders ladderway laddery laddie laddies laddish laddishness lade lade ima laded laden Ladenburg flask ladened ladening

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