Definition
to indicate or cause a future outcome that is very negative or harmful.
将导致灾难／麻烦
This mistake could spell disaster for our project if we don't act immediately.
如果我们不立即采取行动，这个错误可能会为我们的项目带来灾难。
A lack of adequate planning could spell trouble for the trip.
缺乏充分的计划可能会为这次旅行带来麻烦。
His failure to submit the report on time could spell trouble for his career.
他未能及时提交报告，这可能会为他的职业生涯带来麻烦。