【BBC新闻词汇】口哨语

英语自学网

Hints:
        Silbo Gomero
        Canary Islands
       
英式拼法After almost dying out in the 1970s, a kind of whistling language is now undergoing a revival.
Silbo Gomero, as it's known, has become a compulsory subject in one school in Spain's Canary Islands.
The whistling approximates the sounds of the Spanish language.
It can be heard from two miles away, and was used to communicate across valleys and ravines before the arrival of telephones.