half-shell split repair clamp 半壳分离修理夹
They found that the brown shell is made of an array of grooves that split sunlight into diverging beams.
他们发现棕色的外壳由大量的沟状结构组成，它们能把太阳光转换成散射光线。
In ancient times, before important activities were held, a wizard would roast a tortoise shell and then practice divination according to the way the lines split on it.
在古代，每当举行重大活动之前，巫师都要烧烤龟甲，然后根据龟甲上爆裂的纹路来占卜吉凶。
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