Why snow crystal shapes change from thin, flat plates to long, slender needles when the temperature changes remains something of a scientific mystery.
为什么在温度变化时雪晶的形状也随着变化，从薄且平的盘状变成长且细的针状，这仍是一个科学之谜。
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The solar and LED businesses already struggle with oversupply, meaning Samsung may get walloped by the same dramatic price erosion as it has seen in liquid-crystalflat panels.