She was a modest, pleasant and knowledgeable guide who kept her oath of secrecy.

I walked around the city with an encyclopaedically r knowledgeable guide who, in one of the seven languages he speaks fluently, told me about the passage we were walking through.

Study of maps and reference books pays dividends, and knowledgeable guides are invaluable: few battlefields yield their secrets to the uniformed or untutored.

Knowledgeable guides will lead you through the evolution of this factory, from 1903 to 1981.

Knowledgeable guides accompany tourists through the valley, sharing their knowledge about the unique biodiversity and local culture of the national park.