名詞 cardboard:

1. a stiff moderately thick paper
   同義詞：composition board

形容詞 cardboard:

1. without substance
   同義詞：unlifelike

1. The string is wound round a cardboard cylinder.
   線纏繞在紙筒上。
2. The photograph was backed with cardboard.
   照片背面襯上了一層紙板。
3. Don't throw that cardboard box away it may come in handy.
   不要把那個紙盒丟掉--可能用得著。
4. It is a flimsy cardboard box.
   那是一個不結(jié)實的紙箱。

card.board

n.（名詞）
A material similar to thick, stiff paper, that is made of pressed paper pulp or pasted sheets of paper. It is used for making cartons and signs, for example.
卡紙板：一種類似厚硬紙板的材料，用壓制過的紙漿或粘貼的紙板做成。該材料用于做紙（板）盒和標(biāo)志等
adj.（形容詞）
Made of or consisting of cardboard.
卡紙板做的：用卡紙板做的，由卡紙板組成的

Flimsy; insubstantial.
脆弱的：不結(jié)實的；不堅固的
Lacking depth; superficial:
膚淺的：缺乏深度的；淺薄的：
例句：
a movie with only cardboard caricatures of its historical subjects.
一部僅僅只對歷史主題作膚淺諷刺的電影