dream up

US /ˌdriːm ˈʌp/
UK /ˌdriːm ˈʌp/
"dream up" picture
1.

想出, 憑空捏造, 構想

to invent something in your mind, especially something unusual or impractical

:
He dreamed up a crazy plan to travel around the world in a hot air balloon.
想出了一個乘坐熱氣球環遊世界的瘋狂計畫。
Where did you dream up that ridiculous idea?
你從哪裡想出那個荒謬的主意的?