A 术语 派生 from 'landmark' used in 声景观(声景) 研究 to refer to a 团体 声波 which is 独特 or 拥 品质 which make it specially regarded or 注意 by the 人 in that 团体 声标 therefore are of 文化 and 历史 重要(意义) and 值得 保存 and 保护
源 – BT Handbook