1.The result is not set in stone, and there is hope for this team.
结果尚未确定，这个球队还有希望。
These are just a few ideas about this project. Nothing is set in stone yet.
这还只是关于这个项目的一些想法。什么都还没定下来。
set in stone:
(idiomatic) permanent; certain; firm
Synonyms:
written in stone
carved in stone
2.The whole future of the project is still up in the air.
这个项目前途未卜。
up in the air:
(idiomatic) Not yet resolved, finished, answered, decided or certain.
3.After two hours spent wandering in the snow, I realized we were on a wild goose chase.
在雪地里转悠了两个小时后，我意识到我们只是在白费力气。
wild-goose chase:
(figuratively) A futile search, a fruitless errand; a useless and often lengthy pursuit.
