a narrow part of the northern Pacific Ocean that separates Russia and the US

Their ancestors are believed to have wandered across the Bering Strait from Siberia to Alaska thousands of years ago. 据信，他们的祖先在数千年前从西伯利亚穿越白令海峡来到阿拉斯加。

Today only the Bering Strait, some 50 miles wide, separates the two continents. 如今，只有宽约50英里的白令海峡将这两块大陆隔开。