...a ）则出现更为复杂的构造，形成由著生在轮生叶节部表皮细胞突出的柄细胞（pedicel），呈放射状产生八个盾形细胞（shield cell）包裹..
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Shield cell bank 护盾单元库
Cell phone shield 手机屏蔽罩
Doug Bartel, with Blue Cross and Blue Shield of Florida, says the marketing plan for retail health coverage is not that different from cell phones.
NPR: Shopping For Health Insurance? Try The Mall
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