pessimistic estimate悲观: pessimism估计值: estimated value悲观估计: pessimistic estimate乐观估计: optimistic estimate主观估计: subjective estimate; subjective estimation下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:悲观估计值，即可在微信中查询翻译
