He says the most important thing they've learned together over those years is that marriage is a lifetime commitment, with a lifelong responsibility to take care of each other.
他说他们在一起这些年学习到的最重要的事情就是，婚姻是一生的承诺，需要用毕生的责任心来互相关怀。
Over the course of a lifetime, difficulties will inevitably arise. You need to know now, before making a commitment: Can you resolve your differences and find compromises that work for both of you?
人的一生，困难总是层出不穷，在真正投入一段关系前要明确：你能否了解两人的差异并找到折中法让两人都求同并存？
Cheyenne questions her own commitment too - is her pride so important that she can give up love for a lifetime of tramping around in the mud just to satisfy some philosophical ideal?
夏延问题自己承诺过-是她的骄傲，使重要的是，她可以放弃爱一生踏遍周围的泥土只是为了满足一些哲学理想？
The rate of increase in knowledge in orthodontics suggests that practitioners must make a lifetime commitment to improvement, knowledge acquisition and practice modification.
增幅在知识，在正畸表明，练习者必须作出一生的承诺改善，知识的获取和实践的修改。
The decision to progress further to a higher level of skill and intuition implies a lifetime commitment.
若想获得更高水准的技艺与更敏锐的观察力，在通往成功的路上，则意味着毕生的竭心付出。
The decision to progress further to a higher level of skill and intuition implies a lifetime commitment.
若想获得更高水准的技艺与更敏锐的观察力，在通往成功的路上，则意味着毕生的竭心付出。
应用推荐