snow crystal

基本解释

Silicate materials – clay minerals and micas – can act as the core of a fledgling snow crystal.
硅酸盐物质——包括粘土矿物和云母——会成为刚成型的雪花冰晶的核心。
Water molecules join together in a rigid pattern – a tiny ice structure that’s the heart of a snow crystal.
水分子连接成坚固的结构排布，这一小小的冰结构是雪花晶体的核心。
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。

The shape of a snow crystal may change from one form to another as the crystal passes through levels of air with different temperatures.
Soon the sun's warmth makes them shed crystal shells - Shattering and avalanching on the snow crust-- Such heaps of broken glass to sweep away You'd think the inner dome of heaven had fallen.
阳光的温暖接着使那水晶的硬壳,从树枝上崩落，一齐倾泻在雪地上-,这么一大堆碎玻璃尽够你打扫,你还以为是天顶的华盖塌了下来。
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Soon the sun's warmth makes them shed crystal shells Shattering and avalanching on the snow-crust-- Such heaps of broken glass to sweep away You'd think the inner dome of heaven had fallen.

To illustrate, consider how a quickly flowing stream forms stable eddies as it curls around a boulder, or how a snow crystal spontaneously grows its precise, hexagonally symmetric, yet idiosyncratic branches.
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