单语范例（未经PONS编辑处理）
Cutting a hailstone in half shows onion-like layers of ice, indicating distinct times when it passed through a layer of super-cooled water.
en.wikipedia.org This means that generally the larger hailstones will form some distance from the stronger updraft where they can pass more time growing.
en.wikipedia.org Should the hailstone move into an area where mostly water vapour is available, it acquires a layer of opaque white ice.
en.wikipedia.org Other discontinuities include the formation of raindrops, hailstones, and snowflakes.
en.wikipedia.org When the hailstone moves into an area with a high concentration of water droplets, it captures the latter and acquires a translucent layer.
en.wikipedia.org