You will always have some grey areas, particularly at the extremity of your education and experience.

你会一直有一些灰色地带，尤其是在你的教育和经历的极限边缘。

youdao

The Lincoln hills rose up around me at the extremity of a snowy plain, in which I did not remember to have stood before;

在我周围，林肯的群山矗立在一个茫茫雪原的四极，我以前仿佛并未到过这个平原；

youdao

The lake is situated at the eastern extremity of the mountain range.

湖位于山脉最东端。

《牛津词典》

Dagestan adjoins Chechnya, lies at the eastern extremity of the Caucasus mountain range, and the Dagestani capital, Makhachkala, sits on the Caspian coast.

CNN: Boston bombing suspects: The Dagestan connection

Separatist movements exist in Madura, Kalimantan and the Moluccas, though they are puny in comparison with the two best organised, in Aceh on the northern tip of Sumatra, and, at the other extremity, in West Papua (formerly called Irian Jaya, and before that West New Guinea) some 4, 000km (2, 500 miles) away to the east.

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