traditional：Traditional customs， beliefs， or methods are ones that have existed for a long time without changing. 传统的。
conventional：Someone who is conventional has behaviour or opinions that are ordinary and normal. (行为观念等) 传统的。
traditional 传统的(历史悠久,流传下来的一种习惯或习俗,有时候也表示"一般的,常规的"这层意思)
conventional 表示传统的(含"守旧的"这意思,表示不愿意革新的)
1、She's very conventional in her views.
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