您要查找的是不是：
- 要不是国会大厦被烧毁，这座大钟是不会被安装起来的。If the Houses of Parliament had not been burned down in 1834,the great clock would never have been erected.
- 要不是国会大厦在 1834 年被烧毁，这座大钟是不会被安装起来的。If the Houses of Parliament had not been burned down in 1834,the great clock would never have been erected.
- 管理这一类事务的政府机关派了一个人来视察我们的机构。The government which regulates such matters sent a man to look into our organization.
