It is up to you to decide whether we will go there or not.
该由你来决定我们去不去那儿。
Is it right for a doctor to decide when someone should die?
由医生来决定某人何时该死是对的吗?
If a high hill stood between A and B, it was important to decide whether the line should climb over it, pierce it with a tunnel, or make a detour to avoid it.
假設 A 和 B 之間有一座高山,那就要考慮一下,路線應該越過高山、穿過高山,還是直接從山旁繞過呢?
It's a hassle trying to decide what to wear to the party.