1、means n.
(1)every possible means __________ been tried. (a. have b. has )
(2)all possible means __________ been tried. (a. have b. has )
means “手段;方法”,单复数同形。
(1)b (2)a
by this means 用这种方法
by means of…用……办法;借助……
by no means决不
by all means(表示同意)当然可以;务必; 无论如资源难易程度:★★★★★★★★★★★★★★★
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