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1·Another prominent feature of Mars's surface is cratering.

火星表面的另一个显著特征是它的凹凸不平。

2·As on the Moon, the extent of large impact cratering serves as an age indicator for the Martian surface.

和在月球的一样，大型撞击陨石坑的范围之广可以显示出火星表面的年龄。

3·The surface of Mars shows a wide range of geologic features, including huge volcanoes—the largest known in the solar system—and extensive impact cratering.

火星表面显示出广泛的地质特征，包括巨大的火山——太阳系中已知的最大的火山——和广阔的撞击坑。

4·As on the Moon, the extent of large impact cratering (i.e. craters too big to have been filled in by erosion since they were formed) serves as an age indicator for the Martian surface.

与月球上相同，那些巨大陨石坑的范围（例如，那些巨大到自形成后尚未被尘埃填满的陨石坑）标志着火星表面的年龄。

5·That's a problem, comments cratering specialist h.

“这是一个问题，”亚利桑那大学的环形山专家H。

6·Cratering will generally result from an underground burst, just as for a surface burst.

和地面爆炸类似，地下爆炸通常会产生地面落坑。

7·Failure: Pitting, cratering, or erosion of the surface. Obvious and significant deterioration.

失败：表面出现斑痕、凹或侵蚀，明显且重要的材料损毁。

8·In addition, cratering and ground shock phenomena are observed, as will be described in Chapter VI.

此外，还可以观察到巨坑或地面冲击波的现象，这些现象将在第六章中加以叙述。

9·The simulative experiments of cratering effects were designed in concrete, and approved by the real warhead experiments.

据此设计了混凝土中的炸坑效应缩比实验，并利用某原型实验进行了验证。

10·His main scientific interest is Comparative Planetary Geology, and in particular Tectonics, Impact Cratering and Astrobiology.

他的科学专长在于比较行星地质学，特别是有关板块运动、陨石碰撞和天文生物学。

(1)crater laken. 火山口形成的深湖

(1)explosion crater爆裂火口；爆破漏斗