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

世界 80% 以上海洋仍然未测绘，未观测，未勘探。

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

向未知（或图上未标明且未确认）区行进是困难和危险。

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

有一种冒险感觉，去到未开方，勇敢面对未知野兽去征服世界。

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%海洋没有图标记，也没有现并且探索过。

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

对于未测绘区说，一场自然灾害通常意味着没有找你。

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数据，为什么我们 80% 以上海洋仍未绘制图和探索。

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."

在构成阿切尔夫世界小而光滑金字塔之外， 是艺术家、音乐家和“写作者” 居住几乎没有图街区。

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领域感到害怕（至少对于你说，这些领域完全陌生），只消提醒自己岩石爆炸、珍报、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.

当救援员抵达该区寻找幸存者时，我们了解到数以千计流离失所者身处未绘制图区， 因此很难为他们提供急需食物和医疗用品。

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.

研究员研究了电缆轻微变形，并能够感知到小震、查明海底未测绘断层并观察水柱运动——所有这些都可能引起海洋学家兴趣。