Needlessly to say, the computer has eaten up their time for work, for sports and, worse still, their precious time for rest-an natural activity for refreshment to keep the body functioning normally.

• 比如，可以去探讨人们耽溺于电脑空间的心理原因。然而如果那样来写，恐怕会写得很复杂，不是一篇入门短文的能容纳的。