Language Point 28
...a Russian nesting doll with five progressively smaller figures inside. (Para. 10)
progressively: in a way of going from one to the next; step by step; bit by bit
My sight has got progressively worse over the years. 這些年來,我的視力越來越差。
The amount of the loan from the bank was progressively reduced. 銀行的貸款越來越少。