翻译：in vain
徒劳
暂无解析
Nothingcan__________beingunkindtochildren.
Thereisa(n)__________betweenlogicandmetaphysics.
Allofmyeffortsto__________peacefailed.
你评定一种酒的好坏时用什么标准?(criteria)
勿受坏榜样的影响。(influence)