与你共度下半生等你十年陪你过
[yŭ nĭ gòng dù xià bàn shēng dĕng nĭ shí nián péi nĭ guò]
Means 'Willing to spend the rest of my life with you; ready to wait 10 years and be by your side'. A very committed expression conveying deep and long-lasting devotion and readiness for a lifetime partnership after long waiting.