plain
- adj. 平的；简单的；朴素的；清晰的
- n. 平原；无格式；朴实无华的东西
- adv. 清楚地；平易地
- n. (Plain)人名；(英)普莱恩；(法)普兰
词组搭配
as plain as the nose on one's face
(informal)very obvious
(非正式)非常明显，明明白白
plain and simple
(informal)used to emphasize the statement preceding or following
(非正式)[用于强调前面或后面的观点]当然
plain as day
(informal)very clearly
(非正式)非常明显，明明白白