老师：小石同学，告诉我3个理由为什么地球是圆的？
Teacher: Stone, give me 3 reasons why you know the Earth to be round.
大海的味道—比目鱼柳配合烟熏培根，意大利节瓜和圆茄包裹在如硬石般的海盐中煎烤。
Flavor of the sea - halibut fillet covered with bacon, zucchini and egg plant then baked in a shell of rock salt.
白石水库倒垂孔施工，通过严格控制钻孔和保护管偏心值，保证了有效圆直径满足要求。
In the pour the nearing line project of Baishi reservoir, we guaranteed the effective round diameter meets the demands through controlling holing and partial value.
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