I found it difficult to fall asleep.
我发现很难入睡。
Why is it so difficult to fall asleep when you are overtired?
为何你劳累过度却又如此难以入睡？
Doing work and watching TV in your bedroom can lead to a non-sleep association with your bedroom and you may find it difficult to fall asleep.
在你的卧室工作和看电视，会让你无法把睡眠和卧室联系起来，你会发现很难入睡。
These factors and sleep established very strong conditioned reflex, slightly change will affect sleep, so some people change a place it will be difficult to fall asleep.
这些因素与睡眠建立了十分牢固的条件反射，稍有改变就会影响睡眠，所以有的人换一个地方就难以入睡。
These factors and sleep established very strong conditioned reflex, slightly change will affect sleep, so some people change a place it will be difficult to fall asleep.
这些因素与睡眠建立了十分牢固的条件反射，稍有改变就会影响睡眠，所以有的人换一个地方就难以入睡。
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