It has polar ice caps, and lots of rusty dust covering its surface.

它有极地冰帽和覆满表面的生锈的灰尘。

Indonesian television broadcast pictures of objects and oil covering the water's surface in the area where the aircraft came down.

印尼电视台播放的画面显示，坠机海域漂浮着物体和油污。

On the picture, especially if there is no glass covering the surface.

在图片上，特别是如果没有玻璃覆盖表面。

The sounds of the ice is different every winter, depending on how fast the ice grows and how much snow is covering the surface.

在不同的冬天里声音都会有所不同，取决于湖水结冰的速度，以及有多少雪覆盖在上。

During spring and fall migration seasons, people can help migrating birds by keeping outdoor lights turned off and covering reflective surfaces like large windows.

在春、秋两个鸟类迁徙的季节，人们可以通过关闭户外灯光和遮盖大块反光玻璃等方式帮助鸟类迁徙。

Their so-called beak is actually a mosaic of tightly-packed teeth which can scrape and grind rock, allowing them to consume every bit of seaweed covering a stony surface.

它们所谓的喙其实是拼起来的紧凑牙齿，坚硬到能够刮并磨碎石头，这使它们能够把覆盖在石头上的所有海藻都吃光。

(Laughter) But it pales in comparison to the number of microbes that are covering the entire surface of the earth, like in our soils, our rivers and our oceans.

（笑声） 但与覆盖整个地球表面的微生物数量相比，它就相形见绌了，比如我们的土壤、我们的河流和我们的海洋。