Question of the Day #417

"Despite years of research, the brain still contains broad areas of uncharted territory."
From the first paragraph of this article at Science Daily.

上記の文で、uncharted territoryの意味は？
In the sentence above, what does "uncharted territory" mean?

答えは、コメントに書いてください。
Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

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解答

意味：
英辞郎によると、


未知［未踏］の領域

下記例文1にあるように、uncharted watersということもあります。

Answer

According to Merriam-Webster:

a new and unknown area

Examples

• The discussion moved into uncharted territory/waters.
• Genetic engineers are entering uncharted territory.
• That was the uncharted territory that beckoned to the young and bold.
• The work ahead promises to be very fruitful and will enter uncharted territory.
• Before physicians and society can begin to define and construct the moral path through this uncharted territory, the problems must be clearly defined and the inherent conflicts must be exposed.