"lifelong" 是一个 终身的，毕生的形容词，意味着持续一个人整个生命周期的。以下是一些使用 "lifelong" 的例句：
1. A childhood journey sparked his lifelong interest in railways.
2. Her lifelong friendship with Naomi.
3. It was our lifelong dream to travel around the world.
"lifelong" 还可以用来描述与某个活动、兴趣或目标相关的长期承诺或身份，例如：
1. Lifelong learning is essential for personal growth.
2. He is a lifelong fan of basketball.
建议在使用 "lifelong" 时，根据具体的语境选择合适的表达方式，以确保准确传达意图。