她是个乐天派。

She's an ___optimist.

她是个无可救药的乐天派，有很强的幽默感。

She is an incurable ___optimist with a great sense of humour.

即使在困难时期，我内心的乐观主义者也会寻找一线希望。

Even in difficult times, the ___optimist in me looks for the silver lining.