1、It is widely acknowledged that...
2、It is undeniable that...
3、It is important to note that...
4、It goes without saying that...
5、It is well known that...
6、It is worth mentioning that...
7、It cannot be denied that...
8、It is universally accepted that...
9、There is no doubt that...
10、It is evident that...
11、There is a common consensus that...
12、It is a well-established fact that...
13、It is commonly believed that...
14、It is clear that...
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