plain1/plen; pleIn/adj 1 easy to understand or recognize [ obvious ] 明白易懂的﹔显而易见的: It's plain that he doesn’t agree. 很显然他不同意。They made it plain (=said clearly) that they did not want us there. 他们明确表示不欢迎我们。2 without anything added or without decoration [ simple ] 简单的﹔无装饰的﹔朴素的: plain food 简单的食物a plain white shirt 一件朴素的白衬衫a sheet of plain paper (=paper with no lines on it)一张无格纸see picture at见 PATTERN 图3 saying what you think honestly and in clear simple language 〔说话〕坦诚的,直率的﹔简洁的: The plain fact is that we can’t afford it. 明摆着的事实就是我们买不起。The document is written in plain English . 文件是用简单的英语写的。4 a plain person is not attractive 相貌平平的﹐不好看的﹐不漂亮的
plain2n [C] a large area of flat dry land(大)平原
plain3adv informal used to emphasize some adjectives【非正式】简直﹐很﹐十分〔用于强调某些形容词〕: They’re just plain lazy. 他们真是懒得要命。