虽然网上各种介绍新加坡的资料经常用“地势平缓”之类的词语,但我个人感觉用“丘陵起伏”更为合适。我利用谷歌地图作了一个未必恰当、但量化的例证。如图6所示,谷歌地图推荐的从位于新加坡西南海岸的国大校园,步行至位于市区的新加坡总医院(Singapore General Hospital)的三条线路,距离约9公里,海拔高度既要上升87米,又要下降109米。
尾注:[1]https://en.wikipedia.org/wiki/Geography_of_Singapore[2] Thang, Leng Leng, and Johan Suen. 2018. “Singapore’s approach toageing policies: Tackling the limits of the family in supporting seniors.” Pp.131-149, Chapter 7 in Family and Population Changes in Singapore: A UniqueCase in the Global Family Change. Edited by Wei-Jun Jean Yenug and Shu Hu.Routledge: New York.