我拿青春赌明天你拿真情换此生
[wŏ ná qīng chūn dŭ míng tiān nĭ ná zhēn qíng huàn cĭ shēng]
'I Bet My Youth on Tomorrow, You Give Sincerity for This Life.' This implies someone is risking their youth for future rewards while another puts true feelings into a present relationship.