让我们举一个医学上的例子，以便把问题讲得更清楚一些。

Let us use an example from medicine to make matters clearer.

youdao

事实上，行为睡眠问题远比医学上的常见。

In truth, behavioural sleep problems are far more common than medical ones.

youdao

事实上，行为睡眠问题远比医学上的常见。

In truth, behavioural sleep problems are far more common than medical ones.

youdao