ambulatory（回廊）是什么意思？音标发音+图解场景

回廊 /ˌalvɪˈəʊlə ˈbəʊn/ n

English: ambulatory · 回廊

释义：Gallery that makes it possible to walk around the cathedral’s choir, starting from the transept.

这个词出现在以下图解场景（1）