承诺是有档次的。看看下面的几种承诺,或许你对此就更清晰明了: 母鸡保证它生下的鸡蛋,不但不见棱和角,而且一定有蛋皮、蛋清和蛋黄; 某陶瓷制造公司向社会庄严承诺;其生产的瓷器永不生锈,否则愿接受任何处罚; 而通常的承诺方式则是保证今后做到诸如对顾客进行微笑、不售假货及童叟无欺和实行三包之类的承诺。 在如此的一片承诺声中,消费者也的确享受到了近似椭圆, The promise is graded. Take a look at the following commitments. Perhaps you are more lucid about this: The hen guarantees that the eggs it produces are not only ribs and horns, but must have egg skins, egg whites, and egg yolks; A ceramic manufacturing company promises to the society solemnly The porcelain they produce will never rust, otherwise they will accept any punishment. The usual way of promise is to promise to do such things as smiling customers, not selling counterfeit goods, making childlessness and carrying out three guarantees in the future. . In such a promise, consumers have indeed enjoyed a similar ellipse.