短语词组短語BRACE RAIL PIPE 大括號鉄路琯;支撐軌琯;振奮鉄喉琯rail brace 軌撐guard rail brace 護軌撐end arch rail brace 頂棚外耑梁支柱rigid rail brace 固定式軌撐guard against error rail brace 護軌撐 返回 brace rail