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名词
1. 标语牌;告示牌;布告;海报A placard is a large notice that is carried in a march or displayed in a public place.
1. a sign posted in a public place as an advertisement
e.g. a poster advertised the coming attractions
Synonym: posterpostingnoticebillcard
多通过句子记忆单词,而不是单独死记硬背。