但如果它是在离开平面后，在击中目标物前被观测到，那它不会同时通过两个狭缝。

However, if it's observed after it's left the plane. But before it hits its target, it won't have gone through both slits.

youdao

但如果它是在离开平面后，在击中目标物之前被观测到，那它不会同时通过两个狭缝。

However, if it's observed after it's left the plane but before it hits its target, it won't have gone through both slits.

youdao