A sharp ridge with steeply sloping sides, produced by erosion of the broken edges of highly tilted strata.
豚脊丘, 陡峻的山脊由于对高斜层破碎山背的侵蚀而形成的陡峭的山背
An upper, sloping gallery with seats for spectators, as in a theater or an operating room.
阶梯式座位区有为观众设置的阶梯式座位的房间, 如剧院和外科手术室
An upper section, often with a sloping floor, projecting from the rear or side walls of a theater or an auditorium to provide additional seating.
边座, 楼座剧院或大礼堂中为了增加座席, 而从后面或侧墙突出的具有倾斜地板的上面部分
