be pessimistic

基本解释

Dogs can be pessimistic animals, just like people, research shows. Click to enlarge this image.
研究表明，狗也可以是悲观的动物，像人一样。
And it is right to be pessimistic about what would happen if this dream were fulfilled — but for the wrong reasons.
并且，它对于永生的梦想实现后将会发生的事情，持完全悲观的态度——但却是出于错误的理由。
However, whenever I see the confident faces of these young Chinese diplomats, I know that there is no reason for me to be pessimistic about the development of Sino-German relations.
但是，每当我看到这些中国年轻外交官们充满信心的脸庞时，我明白：尽管如此，没有任何理由对中德关系的发展悲观。
www.fmprc.gov.cn

This year,when you have two-thirds being pessimistic about American foreign policy, you have a larger percentage saying maybe it will be better if Iran has nuclear weapons."
Just a couple of months ago London seemed to be soaring and now suddenly there's this pessimistic atmosphere because we don't know what's going to happen in London.
仅仅数月之前,伦敦房价还一路高歌,忽然之间市场一片愁云惨淡,我们不知道伦敦的未来状况
耶鲁公开课 - 金融市场课程节选

He appeared to be pessimistic that the racial difference would narrow in the future.
NEWYORKER: None of the Above
Acuity Brands' Hand said that Philips' 10-year view may even be pessimistic.
NPR: Goodbye Fluorescent Bulb? Philips Says Yes.