由于海森堡不确定性原理，我们永远无法同时精确知道电子的位置和动量。

Because of the ___Heisenberg uncertainty principle, we can never know both the position and momentum of an electron precisely at the same time.

在量子实验中，海森堡效应意味着观察行为本身会改变粒子的状态。

In quantum experiments, the ___Heisenberg effect means that the act of observation changes the state of particles.