Bystanders see clearly; an onlooker sees the situation more clearly than those involved, often in contrast to '当局者迷' (those involved are confused).
他们为这个项目争论不休，但我觉得作为傍观者，我能看到一些他们忽略的关键问题。
They kept arguing about this project, but I feel that as a bystander, I can see some key issues they overlooked.
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