So, that's the problem: we need a simple way to change a property of several UI elements by updating just one condition.

所以，这就是问题所在：我们需要一个简单的方法来改变数，更新用户界面的条件只有一个元素的财产。

Except the river channel configuration is settled in a short period, any big change of one of the factors could be the dominate factor of the ice condition's development.

除河道形态是短期内固定值外，上述每个因素的大幅度变化都有可能成为冰情发展的控制因素。

The postpartum period is a critical one, in which a mother's period when women's physical and mental condition will change as a result of her giving birth.

产后期在妇女生命中乃一关键时刻，身体和心理都需因应新生儿加入家庭作许多方面的调适和改变。