The dye was much cheaper than sea snail dye.
这种染料比海蜗牛染料便宜得多。
Its abdomen is soft, so a hermit crab USES the empty shell of a sea snail to protect itself.
它的腹部是软的，所以寄居蟹用一个空的海洋蜗牛的壳来保护自己。
My companion had never heard of whelk (a large sea snail) and remarked that she hadn't had curry in Chinese food before either.
也未曾吃过用咖哩做的中国菜，我只好向她保证说螺肉美味可吃；
History tells us this was because the purple dye harvested from the sea snail did not fade due to sunlight, but instead became brighter and more intense from weathering.
历史告诉我们，这是因为紫色染料得自海螺，它在阳光下不会褪色，相反，它会变得更明亮，在日晒雨淋之下尤为鲜艳。
Sea butterfly: a swimming predatory Marine sea snail. They have two wing-like outgrowths (lower right) derived from their foot, which they continually flap to swim through the water.
海蝴蝶：一只正在游动的食肉性海蜗牛。它们拥有像翅膀一样的由足进化而来的侧翼(位于右下方)，并靠拍打侧翼在水中前行。
At the same time, this sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants.
与此同时，海水也杀死了贪婪的巨型苹果蜗牛，一种以水稻幼苗为食的外来害虫。
This sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants.
海水也杀死了贪婪的巨头苹果蜗牛，这种外来害虫以水稻幼苗为食。
Aptly called a sea angel, this translucent creature is a snail whose foot has been modified into a pair of swimming wings.
人们形象地称这种透明生物为海天使。它是一种蜗牛，脚部已经进化成为一对游泳用的翅膀。
Aptly called a sea angel, this translucent creature is a snail whose foot has been modified into a pair of swimming wings.
它是一种蜗牛，脚部已经进化成为一对游泳用的翅膀。
Aptly called a sea angel, this translucent creature is a snail whose foot has been modified into a pair of swimming wings.
它是一种蜗牛，脚部已经进化成为一对游泳用的翅膀。
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