1. An athletic supporter having a protective reinforcement of rigid plastic or metal. 
   运动员护身一种运动员用的护身弹性织物，有用保护性的坚硬塑料或金属制成的加强层
2. a rigid strip of metal; a table made of rigid plastic; a palace guardsman stiff as a poker. 
   坚硬的金属条；用坚硬的塑料做成的桌子；刚强得像铁棒一样的宫廷守卫。
3. assays of cellular immunity 
   细胞免疫检测法
4. Two-way charges for cellular phones 
   移动电话双向收费
5. A rigid military disciplinarian. 
   严格执行军纪的军官

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