If you describe something as unpromising, you think that it is unlikely to be successful or produce anything good in the future.
例句
In fact, his business career had distinctly unpromising beginnings...事实上,他的经商生涯从初期就明显前景暗淡。Their land looked so unpromising that the colonists eventually gave most of it back.他们的土地看上去日后没什么用途,所以殖民者最终把大部分都归还给了他们。
英英词典释义
Adjective
1. appearing to be unlikely to result favorably or be enjoyable;
"faced an unpromising task""music for unpromising combinations of instruments"