英语语法分析

And there lies another source of sourness.

此外还存在另一种使坏的根源。

Yes, too long and intense an acquaintance can lead to sourness.

的确，如此过久而认真的相知可导致坏心眼。

Such protestations were lost to the sourness of the national mood.

这种辩解在国民的不满情绪面前全然无用。