Advanced and proficiency resources: (C1 and C2 English resources)
martes, 12 de febrero de 2013
sea urchin - Definition from Longman English Dictionary Online
sea urchin - Definition from Longman English Dictionary Online: "sea urchin [countable]
a small round sea animal with a hard shell covered in sharp points
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary."
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