单词：placoid
音标：['plækɒid] ；
a. (鱼鳞)板状的, 盾鳞状的
n. 有盾鳞的鱼
n. 有盾鳞的鱼
s. as the hard flattened scales of e.g. sharks
【近义词】
- platelike层状的
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