It is no use;it is no use;trashiness ;

You haven't lived until you've used their new micro system.
要是没用过他们新的微系统,这辈子就算白活了。
来源:《柯林斯高阶英汉双解学习词典》What the teacher said went for nothing because the student was absent-minded.
老师说什么都没用,因为那位学生根本就 心不在焉 .
来源:《简明英汉词典》
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