Must greet all guests with warm and naturalstandard at every guest contact point.
在每一次与客人接触时，必须热情和自然地称呼，向客人问候。
2
Many scientists have worked to realize mass naturalstandard for several decades and have got great progress in this field.
几十年来围绕着实现质量自然基准，各国科学家进行了大量的研究，取得了巨大的进展。
3
The nutritional, immunological and growth benefits of breastfeeding have been proven, and so the breastfed infant is the naturalstandard for physiological growth.