a tower in Toronto, Canada, the tallest self-supporting man-made structure in the world when it was completed in 1976. It stands 553 m (1,815 ft) high including a 100 m (328 ft) communications mast.
加拿大国家电视塔(位于加拿大多伦多,1976年建成时为世界最高的人造自承结构,全高553米,即1,815英尺,包括一根100米,即328英尺高的信号桅)。
" CN from Canadian National (Railways)."