CN Tower:
The CN Tower (Tour CN) is a 553.33 m concrete communications and observation tower in Downtown Toronto, Ontario, Canada.
en.wikipedia.org
加拿大國家電視塔:
加拿大國家電視塔（CN Tower，又譯加拿大國家塔、西恩塔）是一座位於加拿大安大略省多倫多的電波塔。
zh.wikipedia.org
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CN Tower加拿大國家電視塔