His letters are insufferably dull.

他的信乏味不堪。

The vaults are insufferably damp.

我家地窖潮湿不堪。

Once I always insufferably arrogant.

曾经的我，总是不可一世。

Mr. Lewis takes an insufferably glib attitude toward it all.

刘易斯先生对这一切不以为意，令人厌恶。

You are still paranoid that the juvenile. Insufferably arrogant.

你始终还是那个偏执的少年，不可一世。