Thealps编码器are a mountain system located in south-central Europe, to the immediate north of the Mediterranean Sea. They extend for almost 700 miles in a crescent shape from the coastline of southern France (near Monaco) into Switzerland, then through northern Italy and into Austria, and down through Slovenia, Croatia, Bosnia and Herzegovina, Serbia and Montenegro - then ending in Albania on the rugged coastline of the Adriatic Sea. 以上是它的英文解释，它实际上是一个山系，分布在很多个国家和不同的地方，所以要用复数。
