We have to maintain communication to understand each other.

必須保持交流以求相互理解。

I have received a letter from my cousin.

我收到了我表兄的信。

We can perhaps forgive those who said the moons of Jupiter were produced by Galileo's spyglass if we recall that in his day, as for centuries before, curved glass was the popular contrivance for producing not truth but illusion, untruth;

如果我們回想一下伽利略之前幾個世紀期間，曲面鏡一直是一種用于產生幻影而不是產生真象的把戲裝置，那么我們就會原諒那些當時把伽利略觀察到的木星衛生說成是伽利略用他的小望遠鏡變出來的人們，