The manager was under the delusion that the project would finish ahead of schedule.

經理誤以為這個專案會提前完成,完全是一廂情願的妄想。

Investors who think the stock price will rise forever are living under a dangerous delusion.

認為股價會永遠上漲的投資人,正活在危險的妄想之中。

Our sales team had the delusion that customers would wait weeks for delayed shipments.

我們的業務團隊妄想客戶會願意為延遲的貨品等上好幾週。