I found it difficult to fall asleep.

我发现很难入睡。

youdao

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？

youdao

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？

youdao