Mathematical Bridge

wooden arch bridge in Cambridge, England

en-GB/ˌmæθɪˈmætɪkəl ˈbɹɪd͡ʒ/
en-US/ˌmæθəˈmædɪkəl ˈbɹɪd͡ʒ/

分类：

footbridgetruss bridgewooden bridge