1 [U] a material made in thin sheets that you use for writing or drawing on, covering things, etc 纸；纸张: a piece/sheet of paper 一张纸a paper handkerchief 纸巾 Types of paper include filter paper, tissue paper, toilet paper and writing paper. 纸的品种包括滤纸(filter paper)、手巾纸(tissue paper)、卫生纸(toilet paper)和书写纸(writing paper)。

2 [C] = NEWSPAPER(1) Where's today's paper? 今天的报纸在哪儿？ You buy a paper at a paper shop or newsagent's. 在书报店或报刊店(paper shop／newsagent's)可买到报纸。

3 papers [pl] important letters or pieces of paper that have information written on them 证件；文件: The document you want is somewhere in the pile of papers on her desk. 你想要的文件大概就在她书桌上那堆文件里面。

4 [C] the written questions or the written answers in an exam 试卷（包括试题卷和答卷）: The history exam is divided into three papers. 历史考试分为三份试卷。

5 [C] a piece of writing on a particular subject that is written for specialists 论文: At the conference, the Professor presented a paper on Sri Lankan poetry. 那位教授在会议上发表了一篇关于斯里兰卡诗歌的论文。

1 in writing 书面；用文字表达: I've had nothing on paper to say that I've been accepted. 我没有接到任何书面通知说我已被录取了。

2 as an idea, but not in a real situation; in theory 概念上；理论上: The scheme seems fine on paper, but would it work in practice? 这个方案理论上不错，但实际上是否可行呢？