扭扣可以用骨头、木头、玻璃或塑料制成。

A button can be made of bone, wood, glass, or plastic.

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方法对40例视网膜脱离再手术病例进行回顾性分析，查找手术失败原因，分别再给以巩膜扣带术或玻璃体切割术。

Methods 40 cases of recurrent retinal detachment were analysed. All cases received reoperation which included scleral buckling operation or vitrectomy according to the causes of recurrence.

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本公司专门批发时款水晶石及玻璃珠首饰。产品包括耳环，颈錬，手鍊，丝巾扣和心口针等。

Our company is specialized in imitated jewelry wholesaling . Our products include earrings, necklaces, bracelets, scarf clips and brooches.

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