echinacean
Any sea urchin of the superorder Echinacea.
As far as possible in embarrassment or difficulty, or in business; deeply involved.
A musician who both sings and composes, especially when recording or performing his/her own compositions.
A renewable energy source.
海洋生物学者はその棘を調べるために、エキナセア上目に属するウニの標本を慎重に顕微鏡で観察した。
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DiQt
Free
★★★★★★★★★★
