Mount Fuji is a stratovolcano, a tall, steep-sided mountain formed by layers of volcanic materials such as ash and lava.

富士山是一座复式火山，是一座由火山灰和熔岩等火山物质层形成的高而陡峭的山峰。

Mikey swam excitedly, but soon a food mountain formed.

米奇兴奋地游着，但很快一座食物山就形成了。

The mountains form a natural barrier between the two countries.

【barrier】群山构成了两国之间的天然屏障。

The bases of the mountains forming the gorge in which the little village lay, were richly green; and high above this gentler vegetation, grew forests of dark fir, cleaving the wintry snowdrift, wedge-like and stemming the avalanche.

小村庄所在的峡谷形成的群山底部绿意盎然。在这片较温和的植被上方，生长着深色冷杉林，它们劈开寒冷的雪堆，呈楔形，阻止了雪崩。

At some places the flanks of the mountain formed an angle with the horizon of at least 36 degrees; it was impossible to climb them, and these stony cliffs had to be tacked round, not without great difficulty.

在某些地方， 山的侧面与地平线形成的角度至少为 36 度；攀登它们是不可能的， 而且这些石崖必须用大钉固定住，这并非没有很大的困难。