英语听力：自然百科:行星旅行指南 火星(22)（在线收听）

It's only place on earth where Viking could have landed and search for life and dirt on earth and not found it and instead found the reactive mixture of chemicals.

这是地球上唯一一个维京号能登陆并寻找地球生命和污垢的地方，没有找到它,而是发现了化学混合物的反应。

The only place. Even here, in the driest corner of the driest desert on earth,

唯一的地方。即使在这里,在地球上最干旱的沙漠中这最干燥的角落,

life has confounded scientists.

生命也一直在困扰着科学家们。

Cyanobacteria have been found living inside the rock heart salt of a long-gone lake.

蓝藻已被发现在盐湖的岩石中心。

This is a halite.

这是氯化钠盐,

It's a sodium chloride salt,

这是岩盐。

which is colonized by Cyanobacteria.

而这是蓝藻的殖民地。

It's dark green because they have this particular pigment protecting them from the access of UV light.

它是深绿色的,因为它们有这个特殊的色素保护自己从而不受紫外线的侵害。

Once in a blue moon,

曾经的蓝色月亮,

a fleeting early morning ground fog deliver some rare humidity to the air above the desert.

一个短暂的清晨，低雾给沙漠上空的空气带来一些罕见的湿气。

These precious moisture is greedly sucked into the microscopic pores of the water-hungery rock salt.

这些珍贵的水分被岩盐中口渴难耐的微孔吸入。

This is a very rare event so these bacteria are living in an environment where liquid water is available a few hours during one year, very, very hard.

这是一件非常罕见的事情,所以这些细菌生活在一年内仅几个小时液态水的环境中，可想而知非常,非常困难。