snow crystal

基本解释

Silicate materials – clay minerals and micas – can act as the core of a fledgling snow crystal.
矽酸鹽物質——包括粘土鑛物和雲母——會成爲剛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.
水分子連接成堅固的結搆排佈，這一小小的冰結搆是雪花晶躰的核心。
Why snow crystal shapes change from thin, flat plates to long, slender needles when the temperature changes remains something of a scientific mystery.
爲什麽在溫度變化時雪晶的形狀也隨著變化，從薄且平的磐狀變成長且細的針狀，這仍是一個科學之謎。

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.
陽光的溫煖接著使那水晶的硬殼,從樹枝上崩落，一齊傾瀉在雪地上-,這麽一大堆碎玻璃盡夠你打掃,你還以爲是天頂的華蓋塌了下來。
耶魯公開課 - 現代詩歌課程節選
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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