冰冠

tīng qi lai tǐng dà de dàn bīng guàn de shuǐ hái bù zú yǐ fù gài huǒ xīng shang suǒ yǒu dì fang de shuǐ dào hé qīn shí dì mào

听起来挺大的，但冰冠的水还不足以覆盖火星上所有地方的水道和侵蚀地貌。

It may sound large, but doesn't contain nearly enough water to account for the flood channels and other erosion features that appear all over the place on Mars.

suí zhe dì qiú qì hòu zhú jiàn biàn nuǎn jí dì de bīng guàn yào kāi shǐ róng huà

随着地球气候逐渐变暖，极地的冰冠要开始融化。

As our climate warms up, the polar ice caps will begin to melt.