Operators other than assignment , address - of , and comma have no meaning when applied to an operand of class type unless an overloaded definition is provided 应该是除赋值、取地址和逗号操作符以外的操作符对类类型操作符没意义吧
The adoption of these resources and activities alone may not achieve real gains in learning outcome and changes in learning practices , and may even become burdensome and meaningless 然而单单采用这些内容及形式不一定能真正提升学习成果，甚至可能变成没意义的负担。
" sir , " replied he , " if you came to me with the idea of demanding satisfaction , you should have gone at once to the point , and not have entertained me with the idle conversation to which i have been patiently listening for the last half hour “阁下， ”他用那种微笑望着阿尔贝答道， “如果你是到我这儿来寻找某种满足，你应该直接说出来，不必和我进行这种没意义的谈话。我已经耐心地听了半个钟头了。
