/ ˈpoʊ.stɚ / A2 noun
a large printed picture, photograph, or notice that you stick or pin to a wall or board, usually for decoration or to advertise something:
The children put up posters on the classroom walls. 孩子們在教室的牆上張貼了海報。

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/ ˈpɪn.ʌp / noun informal
a person who is seen in pin-ups:
With his perfect college-boy looks, he's the latest teenage pin-up. 憑著帥氣如大學生般的外表,他成了最新的青少年偶像。

( 海報 Cambridge Chinese (Traditional)-English Dictionary 的翻譯 © Cambridge University Press)

actions that are intended to make something happen more slowly, in order to win an advantage