This is the 334th most frequent Chinese word.
始终
"始终" means "from beginning to end" or "always."
In this sentence, '始终' emphasizes that her support for my decisions has been continuous over time, highlighting a persistent action or stance.
她始终支持我的决定。
She has consistently supported my decisions.
Here, '始终' indicates that our communication has been uninterrupted over a certain period, stressing the durability of the action.
我们始终保持联系。
We always keep in touch.
In this case, '始终如一' is used as an idiomatic expression to describe a personality trait of consistency, showing fixed behavior or attributes.