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etymology-I

1)inter-、intra-、intro-

三个前缀inter-,intra-intro-还是有差别的。

inter-表between,如international那是between different nations;

intra-表within。比方intramural [,?ntr?‘mj??r(?)l] adj.校内的;内部的。城市内的。那是within the walls(词根mur-表墙壁);

intro-表into,如introduce介绍是to lead into

etymology-I