但是这个数字可能只是冰山的一角，因为它并不包括多动症和行为问题如注意缺损多动障碍等越来越高的发病率。

But the figure could be the tip of the iceberg as it does not include a rising number of hyperactivity and behavioural problems such as ADHD.

youdao

但是这个数字可能只是冰山的一角，因为它并不包括多动症和行为问题如注意缺损多动障碍等越来越高的发病率。

But the figure could be the tip of the iceberg as it does not include a rising number of hyperactivity and behavioural problems such as ADHD.

youdao