别这么悲观，这种失败主义的态度解决不了任何问题。

Don't be so pessimistic - this ___defeatist attitude won't solve anything.

教练告诫队员们不要有消极的态度，认为比赛还没开始就已经输了。

The coach warned the team against adopting a ___defeatist attitude, thinking they'd already lost before the game even started.