volcanic

1. Many oceanic islands are volcanic.: 很多海洋岛屿是火山岛。

2. The city was entombed in volcanic lava.: 那个城市被火山熔岩掩埋了。

3. Over 200 people have been killed by volcanic eruptions.: 已有两百多人死于火山喷发。

4. Volcanic ash showered down on the town after the eruption.: 火山喷发后，小城落了一层火山灰。

5. Volcanic activity has created thermal springs and boiling mud pools.: 火山活动产生了温泉和沸腾的泥浆池。

6. The volcano spewed out more scorching volcanic ashes, gases, and rocks.: 该火山喷出了更多灼热的火山灰、各种气体和岩石。

7. A cloud of volcanic ash is spreading across wide areas of the Philippines.: 一大片火山灰正在向菲律宾的大块区域扩散。

8. So this too suggests ongoing volcanic activity.: 这也表明了火山活动将会继续。

9. The hard volcanic stone apparently had a secure market.: 硬火山石显然有一个可靠的市场。

10. The Cascades are made up of lavas and volcanic materials.: 瀑布是由熔岩和火山物质构成的。

11. How can volcanic activity occur so far from a plate boundary?: 火山活动是如何在离板块边界那么远的地方发生的呢？

12. Volcanic explosions could bring the whole animal species to extinction.: 火山爆发可能会使所有的动物灭绝。

13. The reason is that rich volcanic soil makes the land fantastic for farming.: 原因是，肥沃的火山土壤使这片土地极适于农业。

14. Water and heat from volcanic activity are two basic conditions needed for life to form.: 火山活动所散发的热量和水是形成生命的两个基本条件。

15. The hot spots and their volcanic trails are milestones that mark the passage of the plates.: 热点和它们的火山痕迹是标志板块移动的里程碑。

16. It was generally accepted that volcanic rocks with such high levels of magnesium could not exist.: 人们普遍认为，具有如此高镁含量的火山岩是不可能存在的。

17. The most recent island, Hawaii, would be at the end of the chain and is now over the volcanic source.: 最近的一个岛屿是夏威夷岛，它位于这条岛链的末端，现在位于火山源头的上方。

18. Reykjavik, the capital of Iceland, is entirely heated by geothermal energy derived from volcanic heat.: 冰岛的首都雷克雅未克完全是用火山热产生的地热能来供热的。

19. Its height often changes when volcanic material accumulates during eruptions and subsequently collapses.: 在火山爆发与随后的崩塌过程中，火山物质不断积累，它的高度经常发生变化。

20. It's quite possible that this is due to volcanic eruptions, because volcanic eruptions often emit gases.: 这很有可能是由于火山爆发，因为火山爆发经常释放气体。

21. However, its height often changes when volcanic material accumulates during eruptions and subsequently collapses.: 然而，当火山物质在喷发过程中积累并随后崩塌时，它的高度经常发生变化。

22. Volcanic island species are all transplants from distant locations and exist in combinations not found elsewhere.: 火山岛物种都是从遥远的地方移植过来的，它们的组合在其他地方是找不到的。

23. They occur primarily in regions of recent volcanic activity as hot, dry rock; natural hot water; or natural steam.: 地热能主要以干热的岩石、自然热水或自然蒸汽的形式出现在近期火山活动的区域。

24. The probes have also made the scientists think that under its surface, Europa has a rocky core giving off volcanic heat.: 这些探测器还让科学家们认为，在木卫二的表面之下，有一个释放出火山的热量的岩石内核。

25. As the plate moved slowly northwest, new volcanic islands would have formed as the plate moved over the volcanic source.: 当板块缓慢向西北移动时，新的火山岛就会随着板块的移动，在火山源处形成。

26. Which of the following can be inferred from paragraphs 2 and 3 about the Volcanic eruptions of the late first millennium?: 有关公元后一千年末期的火山爆发，下列哪一项可以从第2段和第3段中推断出来？

27. Gas mixtures emitted from present-day volcanoes resemble this early atmosphere, suggesting its origin from volcanic eruptions.: 现代火山释放出的气体混合物类似于这种早期的大气，这表明它（地球）起源于火山喷发。

28. Also included will be any variations that have arisen from volcanic activity, solar activity, and, possibly, human activities.: 这还将包括火山活动、太阳活动，可能还有人类活动引起的任何变化。

29. Although the origins are uncertain, experts think that this is largely due to the high level of volcanic activity in the area.: 尽管起源还不确定，专家认为这主要是由该地区频繁的火山喷发所造成的。

30. The 1980 volcanic eruption of Mount Saint Helens, for example, sent mud and debris into several tributaries of the Columbia River.: 例如，1980年圣海伦斯火山爆发，导致哥伦比亚河的几条支流产生泥石流现象。

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