n.平坦,明白;
例句:
So called natural beauty is the category involving natural disposition , purity and freshness, simplicity plainness.
天然是表现审美对象自然、清新 、 质朴的范畴.
Every student has his or her characteristic qualities, such as friendliness or reserve, plainness or charm.
每个学生都有自己的不同特点 —— 友善或拘谨, 长相平平或漂亮妩媚.
Strong resolution makes a great cause out of plainness.
坚定的信心,能使平凡的人们做出心人的事业.