在这个神秘而美丽的冬季,雪花如同自然的奇迹,悄然降临。每一片雪花的形成,都是一段独特的旅程,承载着复杂的物理法则与无尽的美感。它们的六边形结构不仅是效率的象征,更是自然界的完美体现。让我们一起探索这些迷人的雪花背后的科学奥秘。
Snowflakes are intricate, beautiful, mysterious, and totally captivating.
But for all their complexity — and endless variety — the structure of a snowflake can be explained by a few universal laws of nature.
Laws that explain everything from snowflakes to galaxies.
Let's start at the beginning.
What is a snowflake?
Or, to use its more technical name, a snow crystal?
A snow crystal forms up in the clouds when water vapour meets little specks of dust or pollen.
This forms its tiny hexagonal heart.
The tips stick out and are rough.
This attracts water molecules.
下载全新《每日英语听力》客户端,查看完整内容