gradual

The gradual erosion of the shoreline was caused by decades of powerful ocean waves.

(Chinese) 海岸线的逐渐侵蚀是由数十年的强劲海浪造成的。

The doctor noted a gradual improvement in the patient's mobility after six months of physical therapy.

(Chinese) 医生注意到病人在经过六个月的物理治疗后，活动能力有了逐渐改善。