A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则,如果在一年内符合各种使用规定,就可更换。
If the Houses of Parliament had not been burned down in 1834, the great clock would never have been erected.
如果不是国会大厦在1834年被焚毁的话,这座大钟永远也不会建造。