潮湿的天气使木制围栏逐渐瓦解。

The wooden fence is ___disintegrating due to the damp weather.

由于缺乏信任，这个团队正在逐渐瓦解。

The team is ___disintegrating due to a lack of trust.

这位老人的记忆正在逐渐衰退。

The old man's memory is ___disintegrating day by day.