And one thing that's a threat to them are pyroclastic flows, when a mix of lava blocks, ash and volcanic gas rush down the slopes of a volcano.

对它们构成威胁是火山碎——即熔岩块、火山灰和火山气体混合物冲下火山斜坡（）。

You would probably need to run away as fast and as far as possible to get away from the hot spewing lava and the deadly pyroclastic cloud.

你可能需要尽可能快跑开，远离喷出炽热熔岩和致命火山碎云。

In addition to lava, volcanoes may erupt with searing hot gas formed in the mantle, in a phenomenon called pyroclastic flow.

除了熔岩，火山喷发时还伴有在地幔中形成灼热气体，这种现象叫做火山碎。

At least 14 people were killed in the eruption, nine are still missing, dozens were injured and officials say the mountain is still dangerous because it's produced at least two pyroclastic flows.

至少14人在火山爆发中死亡，9人仍下落不明，数十人受伤，官员称这座山仍然很危险，因为它产生了至少两股火山碎。

The blast caused earthquakes, tsunamis and pyroclastic flows that decimated the land and took tens of thousands of Indonesian lives.

火山爆发引发了地震、海啸和火山碎，毁了这片土地，夺走了数万印度尼西亚人生命。

So their hypothesis is that this person was exposed to a cloud of superheated ash ahead of that pyroclastic flow with that ash then dissipating and everything cooling off very quickly.

所以他们假设是这个人暴露在了火山碎前方一团超热灰烬中，随后这团灰烬消散，一切迅速冷却下来。

These eruptions spew more than 1,000 cubic kilometers of volcanic ash, pumice, and  other pyroclastic materials into the atmosphere, usually with catastrophic consequences for  life and Earth's climate.

这些火山喷发向大气中喷射了超 1,000 立方公里火山灰、浮石和其他火山碎物质，通常会给生命和地球气候带来灾难性后果。

Pompeii and nearby Herculaneum were utterly annihilated by a wave of  pyroclastic lava flow and buried beneath immense piles of ash.

庞贝和附近赫库兰尼姆被一股火山碎彻底毁，并被大量灰烬掩埋。

About 92,000 people died due to pyroclastic flows, a tsunami triggered by the eruption, and famines from the weather changes.

大约 92,000 人死于火山碎、火山爆发引发海啸以及天气变化造成饥荒。

There are no alpine peaks or grinding glaciers, no great deposits of oil or precious metals, not a hint of a pyroclastic flow.

没有高山山峰或磨冰川, 没有大量石油或贵金属矿藏, 没有一丝火山碎痕迹。

Blazing pyroclastic flows, racing down mountainsides, would annihilate  everything they touch.

炽热火山碎，从山坡上冲下，将湮灭它们所接触到一切。

Even worse is the damage caused by pyroclastic flows.

更糟糕是火山碎造成破坏。

People were  either buried alive in the ash or were instantly killed by the pyroclastic surges.

人们要么被活埋在火山灰中，要么立即被火山碎浪潮杀死。

Pyroclastic surges are super-heated winds of ash, rock, and volcanic gases.

火山碎潮是火山灰、岩石和火山气体热风。

These include the ash, which  historians believe fell at a rate of four to six inches an hour, and the pyroclastic surges.

其中包括火山灰，历史学家认为火山灰以每小时 4 到 6 英寸速度下落，以及火山碎涌动。