形容词 plain:

1. clearly revealed to the mind or the senses or judgment

2. not elaborate or elaborated; simple

3. lacking patterns especially in color

4. not mixed with extraneous elements

5. free from any effort to soften to disguise

6. lacking embellishment or ornamentation

7. lacking in physical beauty or proportion

plainadj.清楚的；简单的；坦白的；平常的；朴素的；纯的n.平原；广阔的区域adv.完全地；纯粹地plain bed无槽机座plain vane圆柱形叶片plain soda白苏达水plain dish家常便饭plain text纯文本；明文plain yolk蛋黄液plain talk坦白的谈话plain stem无螺纹节plain seal平密封plain film平片