Astronomers have observed a distant planet with conditions so extreme that probably rains molten iron.

天文观测到一颗遥远的恒星，这颗恒星上的气候十分极端，雨水竟是铁水。

To make steel the old-fashioned way, you blast iron ore with heat and purify the resulting molten metal with oxygen.

旧的炼钢方式是加热铁矿石使其燃烧，然后用氧气净化溶化的铁水。

In the foundry, she saw hot liquid iron being poured to make the machines. She remembered this for years to come.

在铸造厂里，她看到灼热铁水被浇入制成机械。今后几年她都一这个画面。

Some have the density of cotton candy, and others rain molten iron.

有些的密度像棉花糖，而另一些则下着熔化的铁水。

The old city walls have been recreated and throwing molten iron onto those ancient walls was where Mr. Xue's forefathers invented the art.

老城墙被复建起来了铁水就是被抛向这些老城墙正是薛先生的先祖创造了这项技艺。

And for reasons still unknown to scientists, the molten iron's motion must somehow change to reverse the magnetic field.

由于尚不清楚的原因，铁水的运动必须以某种方式改变以反转磁场。

During the 13th Five-Year Plan period, the container rail-water intermodal transport volume grew by an average of over 23% annually.

集装箱铁水联运量“十三五”期间年均增长超过23%。

Creating a light show out of molten iron is a dangerous business, but Mr Xue has agreed to show me how it is done.

用热熔铁水打出光耀是项危险的行当，但薛先生同意为我展示这一技艺。

The combination of kinetic energy and heat from decaying radioactive elements heated the core of the growing planet into molten iron.

放射性元素衰变所产生的动能和热量，使这颗逐渐形成的行星的内核熔化成了铁水。

In Hebei's Nuanquan town, residents put on a spectacular " firework" show by throwing molten iron against a cold stone city wall to create sparks.

在河北暖泉镇，居民们上演了一场壮观的“烟花”表演，他们将熔化的铁水扔向冰冷的石头城墙，来产生火花。

Well, the reason that the Earth even has a magnetic field has to do with the molten iron in the outer core.

好吧，地球甚至有磁场的原因都与外核中的铁水有关。

And the motion of that molten iron, along with some complicated physics, generates a magnetic field through something called the dynamo effect.

铁水的运动， 连同一些复杂的物理现象，通过一种叫做发电机效应的东西产生了磁场。

But second of all, if the temperature drops too far, then the molten iron will freeze, will turn from liquid to solid.

其次， 如果温度降过低，熔融的铁水就会凝固， 从液态变为固态。

The molten iron has been cooking for about 45 minutes and it is looking pretty hot but, before we let any sparks fly, Mr Xue has to get into protective clothing.

铁水已经烧了大约45分钟了，看着也非常热了但在火花飞溅之前，薛先生需要穿上防护服。

And, you know, if you imagine the blast furnace as this big tower with a tap at the bottom where they let out the molten iron, that plug, it would essentially be clogged and there's simply no way back.

你知道，如果把高炉想象成底部有个水龙头的巨大塔楼， 熔化的铁水从那里流出，那么那个塞子， 基本上就堵死了， 根本无法挽回。