推移

The quality of a photographic reproduction decreases with time.

照片洗印质量会随着时间推移而下降。

In the course of the years many books had accumulated in the house.

随着岁月推移, 屋子里累积了很多书。

In course of time old customs and observances tend to fall into neglect.

随着时间推移, 旧风俗习惯有被忽略。

You can change it only over time, as you save or dissave, or as the value of your assets change.

你只能随着时间推移才能做到一点，比如进行储蓄或者动用储蓄，产价值改变。

After accumulation of frazil ices and crushed ices is formed, it will develop toward upper reach and also process slowly toward lower reach.

个冰花与碎冰显著聚积体形成后即可向上游发展，也能向下游缓慢推移。

Evolution is regarded as a branching process, whereby populations are altered over time and may speciate into separate branches, hybridize together, or terminate by extinction.

进化被视为一个分枝过程；随着时间推移，种群发生改变，种群也可能进化成为分枝，也可能相互杂交或灭绝终止。