echinoderm
echinoderm — 名詞
- echinodermsingular
- echinodermsplural
1. a sea animal whose body is built from five matching parts spread around a centra
棘皮動物
身體呈五等分輻射對稱的海洋無脊椎動物
a sea animal whose body is built from five matching parts spread around a central point, often with a hard, spiny outer surface; starfish and sea urchins are common kinds.
A starfish is an echinoderm, with five arms spread out around its middle.
海星是一種棘皮動物，五隻腕足從身體中央向外展開。
defining pattern: [animal] is an echinoderm
Karim found a sea urchin, a spiny echinoderm, in a shallow rock pool.
Karim 在淺淺的潮池裡發現了一隻海膽，那是一種多刺的棘皮動物。
apposition: a [adjective] echinoderm naming an example
Most echinoderms live on the sea floor and move using tiny tube feet.
大多數棘皮動物住在海底，靠細小的管足移動。
Eve drew an echinoderm in her science book and labelled its five equal parts.
Eve 在她的自然課本上畫了一隻棘皮動物，並標出牠的五個等分。
The museum tank held bright echinoderms, from orange starfish to black sea urchins.
博物館的水槽裡有色彩鮮豔的棘皮動物，從橘色海星到黑色海膽都有。
用法筆記
Mainly a biology term — in everyday English, speakers usually name the specific animal (starfish, sea urchin, sea cucumber) rather than reaching for the group word.