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1、as far as ...is concerned... 就...而言
2、lt goes without saying that... 不言而喻...
3、it can be said with certainty that... 可以肯定地说......
4、as the proverb says... 正如谚语所说的...
5、lt has to be noticed that... 它必须注意到...
6、lts generally recognized that... 它普遍认为...
7、its likely that... 这可能是因为...