They refused to settle for a promise of jam tomorrow.

他们并不满足于那些美好未来的空话。

Jam tomorrow and jam yesterday-but never jam today.

明天有果酱，昨天有果酱，就是今天没有果酱。

Jam tomorrow and jam yesterday — But never jam today.

明日有果酱，昨日有果酱——但是今日没有果酱。

Please take care of today, but than, it is jam tomorrow.

请善待今天，否则就会明日果酱。

We hope the car he promised to buy is not a jam tomorrow.

明天我希望他答应买的车不是一瓶果酱。