熔岩在火山口下几英尺处沸腾。
熔岩只会缓缓地从火山口流出来。
火山灰开始从火山口喷出。
如果你继续往前走就会看到第二个火山口。
这张引人注目的‘月虹'照片是由WallyPacholka在游览参观夏威夷毛伊岛哈雷阿卡拉火山口时拍摄的。
The remarkable photograph of a 'moonbow' was taken by Wally Pacholka as he looked over the Haleakala crater on Maui Island in Hawaii.
因此，在地球上生命开始的时候，我们所看到的金星是一片温暖的海洋，这片海洋可能富含在岩石海岸和火山口周围飞溅的有机分子。
Thus, our picture of Venus at around the time life was getting started on earth is one of warm oceans, probably rich with organic molecules splashing around rocky shores and volcanic vents.
此外，撞击留下的大块物质会在主火山口周围形成二级火山口。
Also, large blocks thrown aside by the impact would form secondary craters surrounding the main crater.
然而，维持大型火山口群落所需的食物供应量必须是普通沉降物的数倍。
The food supplies necessary to sustain the large vent communities, however, must be many times the ordinary fallout.
黄石公园显然属于第二种类型，但是克里斯蒂安森就是找不到这个火山口。
Yellowstone obviously was of this second type, but Christiansen couldn't find the caldera anywhere.
在距离最近的热液源几米远的深海温度下，也发现了一些与火山口有关的大型静止生物。
Some of the large sedentary organisms associated with vents are also found at ordinary deep-sea temperatures many meters from the nearest hydrothermal sources.
如果你正在寻找一次一生难忘的冒险经历，那么来一场蹦极，从直升机上跳到活火山口怎么样？
If you're looking for the adventure of a lifetime, how about going bungee jumping off a helicopter into the crater of a live volcano?
这些火山具有极强的爆发性，以至于在它们从一条大的裂缝中喷涌而出，留下了一个巨大的洞，也就是火山口。
These volcanoes are so explosive that they burst open in a single big crack, leaving behind a vast hole, the caldera.
当火山口没有被填满时，就会出现火山口裂缝。
破火山口因后来的阵发性爆发而扩大，最终于公元79年一次爆发。
The caldera was enlarged by later paroxysmal eruptions ending in the one of AD 79.
火山口直径约135公里。
火山灰锥通常形成于火山口周围或者顺风处。
Cinder cones often form around or downwind from volcanic vents.
该破火山口被认为是活火山。
幌筵岛的该地区由四个主火山口构成。
上面的图像是这个火山口用计算机生成的引力图。
The image is a computer-generated gravity map of the crater.
我们现在就在火山口。
还是那座火山口，背景是Viluchinsky火山。
The same crater in against the background of Viluchinsky Volcano.
最壮观的时刻就是从熔岩慢慢从火山口流出来。
The most spectacular sights often came when the volcano would slowly push lava up and out of its erupting vents.
一小股烟从爆发后的圣海伦斯火山蛋壳型的火山口倾泻而出。
A wisp of smoke escapes from Mount St. Helens' dramatic eggshell-shaped crater after an eruption.
（攀登）在火山口的山脊上不再那么困难，因为路面更结实。
On the ridge of the crater the grade becomes less difficult, the trail more solid. It's a needed break.
在火星南半球的中纬度地区，似乎有水在火山口的边缘流动过。
In the middle latitudes of the planet's southern hemisphere, water appears to flow off the edges of craters.
附近的熔岩蕴含大量的金属矿石，火山口背阴的一边常年结冰。
There are metal ores in the rocks nearby and ice in the shadows of the crater below.
一场猛烈地史前喷发使得地壳倒塌，并形成了装满水的火山口。
A violent prehistoric eruption caused the Earth's crust to collapse and form a crater that filled with water.
一场猛烈地史前喷发使得地壳倒塌，并形成了装满水的火山口。
A violent prehistoric eruption caused the Earth's crust to collapse and form a crater that filled with water.
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