It is also difficult to decide when to evolve or differentiate a namespace.
决定何时演化或者区分名称空间也很困难。
It is also sometimes difficult to decide what truly belongs behind the facade.
有时决定究竟什么是属于facade的，也是有困难的。
It is difficult to decide between the twins.
很难在这对双胞胎决定取舍。
It is difficult to decide between the two opinions.
在这两种意见之间抉择是困难的。
But when you decide to go to Arsenal, it is difficult.
但是当你决定要去阿森纳，竞争会很艰难。
What is your favourite cartoon? It may be difficult for you to decide.
你最喜爱的卡通是什么？决定它可能会很困难。
It is difficult for me to decide between the two.
在这两个当中，我很难决定选哪一个。
It is difficult for me to decide between the two.
在这两个当中，我很难决定选哪一个。
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