adj.永恒的，永久的，不朽的

His love for her was undying, even after she left him.
他对她的爱永不消逝，即使她离开了他。
The bond between them remained undying despite the years that passed.
他们之间的纽带尽管随着时间流逝依然不灭。
Her devotion to her cause was undying, no matter the challenges she faced.
她对事业的忠诚永不减退，不论面对什么挑战。
The friendship they shared was an undying flame in their hearts.
他们共享的友谊在他们心中如同永不熄灭的火焰。
His passion for music remained undying throughout his life.
他对于音乐的热爱贯穿了他的一生。
The memory of her laughter was an undying part of his childhood.
她的笑声是他童年的永存记忆。
His undying spirit helped him overcome every obstacle he encountered.
他那永不消逝的精神帮助他克服了每一个遇到的障碍。
The undying love between them was the foundation of their marriage.
他们之间永不消逝的爱情是婚姻的基础。
Despite the many trials and tribulations, their love was undying.
尽管经历了许多考验和磨难，他们的爱永不消逝。
The undying legacy of their ancestors lived on in their family.
祖先留下的永不消逝的遗产在他们家族中延续。