蓝砂石颜色接近紫色，里边的砂部门为蓝色，故称蓝砂石。
Blue and purple sand color close, while for the blue, sand part blue sandstone said.
这是一个概率问题，但用微分方程解决，故称概率微分模型。
This is a probability problem, called it probability differential model because it's solved by differential equation.
多囊卵巢综合征患者的卵巢有很多小囊泡发育，故称‘多’囊。
In patients with PCOS, multiple small cysts develop in the ovaries, hence the term "poly" cystic.
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