They decided to put their relationship on a more formal footing.

他们决定建立更正式的关系。

It is time to put these arrangements on a slightly more formal basis.

是应该把这些安排做得略为正式一点的时候了。

They wore ordinary ties instead of the more formal high collar and cravat.

他们打着普通的领带而不是更为正式的高领领结。

Complete sentences express a more formal attitude.

完整的句子表达了较正式的态度。

The bribery convention is a more formal instrument.

反贿赂公约将是一个更加正式的文件。