5.dissipating their energies in pointless argument;
的争论中消费精力;
6.She considered it pointless to plan in too much detail.
她认为计划得太详细没有。
7.The host bored his guests with a long and pointless anecdote.
主讲述的冗长而毫的轶闻使客们都厌倦了。
8.pointless attempts to rescue the victims of the raging fire.
试图将熊熊大火中的遇难者救出的徒劳举动
9.He asked them all kinds of pointless questions, stalling for time.
他向他们提了各种毫的问题来拖延时间。
10.We don't know all the circumstances, so it would be pointless to speculate.
我们不了解所有的情况, 妄加推测是没有的。
11.DISCARDABLE tells the system it may swap the resource memory to disk when it's not being used in order to conserve system resources (essentially pointless).