More than 80% of the world's oceans are still unmapped, unobserved, and unexplored.

80% 以上的海洋仍然未测绘，未观测，未勘探。

It was a difficult and dangerous journey into uncharted (or unmapped and unknown) land.

向未知的（或地图上未标明且未确认的）地区行进是困难和危险的。

There was a sense of adventure, going to unmapped places, braving beasts of unknown description to conquer the world.

有一种冒险的感觉，去到未开发的地方，勇敢地面对未知的野兽去征。

And yet the National Oceanic and Atmospheric Association of the United States estimates that 80 percent of the ocean is unmapped, unexplored and unobserved.

然而，美国国家海洋和大气管理局估计大约有80%的海洋没有地图标记，也没有发现并且探索过。

For those in unmapped areas, a natural disaster often means no one will come to find you.

对于未测绘地区的，一场自然灾害通常意味着没有会找你。

So why is it that more than 80 percent of our oceans are still unmapped and unexplored according to the National Ocean Service.

那么，根据美国国家海洋局的数据，为什么我们 80% 以上的海洋仍未绘制地图和探索。

Beyond the small and slippery pyramid which composed Mrs. Archer's world lay the almost unmapped quarter inhabited by artists, musicians and " people who wrote."

在构成阿切尔夫的小而光滑的金字塔之外， 是艺术家、音乐家和“写作者” 居住的几乎没有地图的街区。

If you start to freak out at the sight of such unmapped territory (unmapped by you, at least) , just remind yourself that rocks explode, Jane transmits, mountains float, and plums deify.

如果你见到这些毫无标注的领域感到害怕（至少对于你，这些领域完全陌生），只消提醒自己岩石爆炸、珍发报、山漂浮，还有李子崇拜。

As rescue workers arrived in the region in search of survivors, we learned that thousands of displaced people were in unmapped areas, making it difficult to reach them with much-needed food and medical supplies.

当救援员抵达该地区寻找幸存者时，我们了解到数以千计的流离失所者身处未绘制地图的地区， 因此很难为他们提供急需的食物和医疗用品。

The researchers studied the slight deformations in the cable and were able to sense a small earthquake, pinpoint unmapped faults in the seafloor and observe movements in the water column—all of which might be of interest to oceanographers.

研究员研究了电缆的轻微变形，并能够感知到小地震、查明海底未测绘的断层并观察水柱的运动——所有这些都可能引起海洋学家的兴趣。