This super chilled water and ammonia mixture eventually clings together into slushy hailstones that fall down into the lower atmosphere where they melt into rain, evaporate, and then rise back up to start the process all over again.

这种极度冰冷的水和氨的混合物最终会凝结成类似冰沙的冰雹，下至低层大气融化成雨水，随蒸发，再次上升，循环往复。

You already know what cumulo means and it won't surprise you to find out that nimbus means rain and added as a suffix is an indication of clouds ability to produce precipitation which could be rain snow or hailstones.

你已经知道 cumulo 的意思了，所以当你发现“nimbus”的意思是“雨”时，你就不会感到惊讶了。“nimbus”缀表示云有能力产生降水，可能是雨、雪或冰雹。

These would then fall down to the base of the mantle like sparkly hailstones.

然它们会像闪闪发光的冰雹一样到地幔的底部。

In a few minutes, rocks were falling like hailstones around them and around us.

几分钟内，石块像冰雹一样在他们和我们身边。

And if the supply of water vapor is much larger, the energy released can produce stratosphere-high pillars of cloud with violent updrafts, fierce electrical storms, and grapefruit-sized hailstones.

如果水蒸气的供给足够多，所释放的能量就可以形成平流层高度的云柱，伴随着猛烈的上升气流，造成猛烈的雷暴，下柚大小的冰雹。

And speaking of bizarre, the largest hailstone ever found measured in at roughly 20 cm, weighing almost 1 kg.

说到离奇，目前发现最大冰雹大约20cm，重量近1公斤。

The largest hailstone ever recorded in the United States was found in July 2010 in Vivian, South Dakota.

2010年7月，美国南达科塔维维安发现了有史以来最大的冰雹。

So the bigger the hailstone, the faster its terminal velocity.

因此冰雹越大，其终端速度越快。

For a few minutes the rain came in a grand torrent like a waterfall, then hail; some of the hailstones an inch in diameter, hard, icy, and irregular in form, like those oftentimes seen in Wisconsin.

几分钟，雨像瀑布一样倾泻而下，然是冰雹。有些冰雹直径一英寸，坚硬、冰冷、形状不规则，就像在威斯康星州经常看到的冰雹一样。

Down came a dash of spent comets, thin and harmless-looking in the distance, but they felt desperately solid and stony when they struck my shoulders, like a mixture of choking spray and gravel and big hailstones.

几颗耗尽的彗星下，从远处看它们很薄，看来无害，但当它们撞到我的肩膀上时，我感觉它们非常坚硬和坚硬，就像令人窒息的浪花、砾石和大冰雹的混合物。

The layers, however, do not occur simply due to the hailstone going through up and down cycles inside a thunderstorm.

然而，这些层次并不是简单地由于冰雹颗粒在雷暴内部上下循环造成的。

Out of the brightness of his presence clouds advanced, with hailstones and bolts of lightning.

因他面前的光辉，他的厚云行过，便有冰雹火炭。

I will execute judgment on him with plague and bloodshed; I will pour down torrents of rain, hailstones and burning sulfur on him and on his troops and on the many nations with him.

我必用瘟疫和流血的事刑罚他。我也必将暴雨、大雹与火，并硫磺降与他和他的军队，并他所率领的众民。

So this is the United States and current world record hailstone that was found in Vivian, South Dakota.

- 这是美国和目前世界纪录的冰雹，是在南达科他州维维安发现的。

Meanwhile, giant hailstones pounded the main camp.

与此同时， 巨大的冰雹袭击了主营地。

Now the coins sounded like hailstones hitting a windshield.

现在硬币听来就像冰雹打在挡风玻璃上一样。

A laser thunder factory could shake the moisture out of clouds, perhaps preventing the formation of the giant hailstones that threaten crops.

激光雷工厂可以抖云层中的水分，或许可以防止威胁农物的巨型冰雹的形成。

How accurate is the recreation of these hailstones?

这些冰雹的再现有多准确？

Hailstones have been measured up to 20 centimeters in diameter.

据测量，冰雹的直径可达20厘米。

Hailstones are formed when raindrops are carried upward by thunderstorm updrafts into extremely cold areas of the atmosphere and freeze.

冰雹颗粒是在雨滴被雷暴上升气流携带到大气中的极冷区域并冻结时形成的。