usefully adv. 有效地,有用地;
例句:
Your time could be usefully employed in attending night classes.
你的时间可以被有效地利用来上夜课。
相关介绍
I resolve to index data usefully.
我决心有效地索引数据。
The intelligence services do indeed believe that their influence has been usefully strengthened.
情报部门确实相信,他们的影响已经被有效地加强。
The money could be more usefully spent on new equipment.
这笔钱用来购置新设备可能会更有价值。


