A placard is a large stiff notice — cardboard, plastic, or a board — with writing or a picture on it, put up where people will see it or carried in the street. Protesters hold placards; shops hang placards in the window; a hall may put a placard by the door to say what is on.

A placard placard標語牌is a large stiff notice是一種又大又硬的告示— cardboard, plastic, or a board紙板、塑膠或木板做的—with writing or a picture on it上面有文字或圖案, put up where people will see it會被放在大家看得到的地方or carried in the street或是在街上被人拿著。Protesters hold placards抗議者會舉著標語牌; shops hang placards in the window商店會在櫥窗掛上標語牌; a hall may put a placard by the door一間廳堂可能會在門口放一塊標語牌to say what is on說明正在進行什麼活動。

It is more solid and shoutier than a sheet of paper: you can hold it above your head.

It它is more solid and shoutier than a sheet of paper比一張紙更堅固、更有氣勢: you can hold it above your head你可以把它舉過頭頂。

A poster is often stuck to a wall and may be pretty; a placard is there to announce or demand. A banner is usually cloth and long; a placard is typically a board.

A poster poster海報is often stuck to a wall and may be pretty通常是貼在牆上的，可能很漂亮; a placard placard標語牌is there to announce or demand存在的目的是宣告或訴求。A banner banner布條is usually cloth and long通常是長條的布做的; a placard placard標語牌is typically a board則通常是一塊板子。

The word is a little formal and a little old-fashioned in everyday talk — people often just say sign — but news reports still like placard when they mean the boards in a crowd. There is a rarer verb, to placard a wall, meaning to stick notices all over it; the noun is the one students need.

The word這個字is a little formal and a little old-fashioned in everyday talk在日常對話裡有點正式、有點過時— people often just say sign大家常常就直接說sign—but news reports still like placard但新聞報導還是喜歡用placardwhen they mean the boards in a crowd在講群眾裡舉的那些牌子時。There is a rarer verb還有一個比較少見的動詞, to placard a wallto placard a wall, meaning to stick notices all over it意思是把一面牆貼滿告示; the noun is the one students need學生需要的是名詞這個用法。