be pessimistic about meaning in English

对......持悲观态度
对于…感到悲观

There is no reason to be pessimistic about the future .
没有理由对未来悲观。
The doctors are pessimistic about her chances of recovery
医生对她康复的可能性表示悲观。
Don ' t be pessimistic about my plans
（不要对我的计划那么悲观。）
He is pessimistic about the future
他对未来感到悲观。
At a time when people are pessimistic about the last stage of the dharma , or trembling with fear about the coming of doomsday , supreme master ching hai speaks in high spirits of a new age unfolding for humankind
当世人常提末法时代，恐惧世界末日到来的时候，清海无上师却畅言人类要迈入新世纪。