[水文][地理]极地冰冠；火星表面的极冠；高山冰冠

n.行星两极处之极冠，南北极的冰帽

polar caps───[水文][地理]极地冰冠；火星表面的极冠；高山冰冠

polar bear───[脊椎]北极熊

salary cap───工资上限

flat cap───n.鸭舌帽

pile cap───[建]桩帽

polacca───n.三桅船；波兰舞曲

polaccas───n.三桅船；波兰舞曲

solar day───[天]太阳日

polar bears───[脊椎]北极熊（polarbear的复数形式）

And some may exist in the southern polar cap -- but not much.───还有些存在于南部极地冰 冠 中一但不会太多.

An inexplicable new broad region of auroral light has been photographed at Saturn's polar cap.───一种无法解释的大范围新型极光出现在土星的极盖地区,被摄像机拍摄下来.

As often seen through an astronomical telescope eyepiece, the planet's orientation is inverted, with Mars' north polar cap at the bottom.───由于往往是通过天文望远镜的目镜拍摄，火星的方向是颠倒的，行星的北极冠在下面。

Melt-Proof The south polar cap is mostly frozen carbon dioxide, which shrinks during the summer but never disappears.───南极盖上有很多冻结的碳氧化合物，这些东西在夏天会收缩，但从来没有消失过。

This year, Shanshan's dad was a pilot on flights over the Polar Cap.───今年，姗姗的爸爸成为了飞两极冰帽的航班上的飞行员。

Every winter, Mars's polar cap is sheathed in a thin blanket of carbon dioxide.───每到冬季，火星的极冠被一层薄薄的二氧化碳覆盖。

Zuber and her colleagues also analyzed Mars's much larger northern polar cap.───尤伯和她的同事也分析了火星上要大得多的北部极地冰冠。

The disappearance of polar cap will greatly affect polar bears and other halobios .

An inexplicable new broad region of auroral light has been photographed at Saturn's polar cap.