单词	sand dollar
释义	sand dollar noun A flattened sea urchin which lives partly buried in sand, feeding on detritus. Order Clypeasteroida, class Echinoidea. This study examines skeleton remodelling and resorption in larvae of the common sand dollar Echinarachnius parma and the green sea urchin Strongylocentrotus droebachiensis.... Scattered on the cloth are pinecones and seashells, a sand dollar, a starfish, a sea urchin. The number of fresh grains encountered by the barrel-tipped podia can be dramatically increased by increasing the width of the test, relative to the overall size of the sand dollar.
随便看	non-admissible non-admission non-adult non-affective nonage nonagenarian nonagesimal non-aggression nonagon nonagonal non-alcoholic non-algorithmic non-aligned Non-Aligned Movement non-aligner non-alignment non-allelic non-allergenic non-allergic non-allied non-alphabetic non-ambiguity non-ambiguous no-name nonamer

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