This is the 3237th most frequent Chinese word.
分开
"分开" means "to separate" or "to divide."
In this sentence, '分开' is used to mean 'separate.' It signifies the process of separating items that were together.
我们必须分开这些颜色。
We must separate these colors.
Here, '分开' describes the status of two entities (people, in this case) who are physically or emotionally separated or detached.
他们两个已经分开很久了。
The two of them have been separated for a long time.
'分开' in this context implies dealing with items individually and not collectively, emphasizing a distinct treatment or consideration.