二に枚まい看かん板ばん

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Meanings

1

two star attractions; two leading actors; two main features

yojijukugo (four-character idiom)

Originally from theater, now used broadly for any pair of standout people, items, or selling points that define a group, event, or product.

このチームの二に枚まい看かん板ばんは、エースピッチャーと四よ番ばん打だ者しゃだ。
The two star players of this team are the ace pitcher and the cleanup hitter.
新しん商しょう品ひんの二に枚まい看かん板ばんは、軽かるさとバッテリーの持もちだ。
The two main selling points of the new product are its light weight and long battery life.