Afterward, the seas became far more complex with mobile creatures such as snails, urchins and crabs.
此后, 海洋生物逐渐丰富起来,海洋里生长着大量移游生物,比如腹足类 、 海胆类和蟹类.
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Scientists have long used sea urchins to study fertilization and early development in humans.
科学家们一直用海胆来研究受精卵和人类早期形态.
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People said that he had jaundice and urchins nicknamed him " Yellow Fellow. "
别人说他是黄胆病,孩子们也就叫他 “ 黄胖 ” 了.
汉英文学 - 中国现代小说
准备好迎接狄更生式的,包含积雪 、 街头顽童和穿着马甲的绅士的轻松情节.
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We were in the bazaar with all the little urchins watching us.
我们在集市里,周围一大帮衣衫褴褛的小孩盯着我们看。
《柯林斯高阶英汉双解学习词典》
"echinoid: an echinoderm of the class Echinoidea, which includes the sand dollars and sea urchins."
“海胆:一种属于海胆纲的棘皮动物,包括沙钱和海胆.”
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The same sea urchins , sea urchins but the two places a qualitatively different.
同是海胆, 但是两地的海胆却有着质的不同.
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For instance, it appears the ancestor of brainless starfish and sea urchins had a brain.
例如, 无脑海星和海胆的祖先似乎曾有大脑.
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