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1·Alaska - Steam rises from the top vent in the summit crater of Mount Redoubt.

阿拉斯加，蒸汽从山顶上的火山口喷发。

2·Three crater lakes are located on the eastern summit of Keli Mutu.

三个火山口形成的深湖位于克丽穆图(Keli Mutu)东面的山顶上。

3·Magma can erupt to the surface and form lava flows through the volcano's summit (frequently forming a crater), but it can also erupt from lava domes and flank vents along the volcano's sides.

岩浆能喷发出地表，并通过火山峰顶形成熔岩流(大多情况会形成火山口)，但它也能通过火山山体侧面的火山岩圆顶和侧面出口喷发出来。

4·The summit of Mons Malapert, according to our calculations, always has the Earth and Shackleton Crater (at the lunar south pole ) in view for direct and continuous high-bandwidth communication.

据我们测算，在马拉佩尔高地的最高处，布满了链状环形山（位于月球南极），可以用来布置直接的和连续的宽带通讯。

5·On a clear day it is customary to walk around the crater to the weather station that marks the volcano's highest point. Some send postcards from the summit post office.

通常在天气晴好时，人们沿着火山口走到位于火山最高点的气象站，也有人到山顶邮局去寄出明信片。

6·It is striking: the outline of the outline of the slope rises slowly to a long, flat top of the mountain, it is really a giant crater-a basin of volcanic summit.

它的轮廓非常鲜明：缓缓上升的斜坡引向一长长的、扁平的山顶，那是一个真正的巨型火山口——一个盆状的火山峰顶。