accretion

银行资产的增长主要来自新增客户存款。

The bank's asset growth came mainly from the ___accretion of new customer deposits.

雪球在滚下山的过程中通过不断吸附周围的雪而变大。

The snowball grew larger through the gradual ___accretion of snow as it rolled down the hill.

他对当地历史的深厚了解，源于三十年间不断走访村中长者的点滴积累。

His deep knowledge of local history came from the slow ___accretion of thirty years of interviewing village elders.