c. 1500, from Middle French plastron "breastplate," from Italian piastrone, augmentative of piastra "breastplate, thin metal plate" (see piaster). As an animal part, from 1813; as an article of dress, 1876.
实用例句
1. Tortoises seem to preferentially put the available calcium in the plastron.
龟们似乎更喜欢把可用的钙质添加到他们的胸甲中.
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2. Objective : To identify the commercial Chinese medicines turtle shell and tortoise plastron.
目的: 鉴定鳖甲、龟甲类商品药材.
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3. After the tortoise is anesthetized the bottom of the shell ( called the plastron ) is cleansed thoroughly.
