stable mate

例句：

1. 1. He's alwaysbeen a stable mate to his wife.
   他一直是妻子的稳定伴侣。
2. 2. The couplehas been together for over 30years and is considered a stable mate.
   这对夫妇在一起已经30多年了，被认为是一对稳定的伴侣。
3. 3. Inthe old days, stablemates were often seen inthe fields, working side by side.
   在旧时代，稳定的伴侣常在田野里并肩工作。