其实，做梦不仅是一种正常的心理现象，而且是大脑的一种工作方式，有助于记忆、过滤无用信息，保证正常的效能。
Actually, the dream is not only a normal psychological phenomenon, and is one of the brain's a way of working, help to memory, filter useless information to ensure the normal performance.
进行设备大修理的经济性分析、论证工作，可以提高计划的正确性和工作效率，减少许多无用功劳动和浪费现象。
The economic analysis and demonstration on overhaul of equipment can improve the plan and efficiency of work, and reduce useless work wasting time.
不客气地说，大量攻略严重存在时间后滞现象，同样也介于有用无用之间。
Let's put it in a more direct way: since most of specific methods have time lag, they can be between being useful and being not.
社会分配不公现象的出现促使新的“读书无用论”抬头，造成了人们的短视行为。
The occurrence of social distributing unfairness urges a new opinion of "schooling is useless" to rise, which leads to a kind of short-sight actions.
但是最近，当美国的研究表明以强凌弱现象在增多而父母的管教在减少时，以强凌弱现象的研究者们却发现给父母打电话毫无用处。
But these days, as studies in the U. S. show bullying on the rise and parental supervision on the decline, researchers who study bullying say that calling moms and dads is more futile than ever.
但是最近，当美国的研究表明以强凌弱现象在增多而父母的管教在减少时，以强凌弱现象的研究者们却发现给父母打电话毫无用处。
But these days, as studies in the U. S. show bullying on the rise and parental supervision on the decline, researchers who study bullying say that calling moms and dads is more futile than ever.
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