occasional

Other than the occasional rain shower, the weather during our vacation was sunny and warm.

(Chinese) 除了偶尔的阵雨，我们度假期间的天气一直是晴朗温暖的。

He still enjoys an occasional game of chess with his old college friends on weekends.

(Chinese) 周末他仍然偶尔和大学时的老朋友下一盘国际象棋。