刚开始的时候，当代首饰是一个不为人知晓的领域，所以他们需拥有传教士般的热忱向他们的顾客讲解相关的知识。
When they started, contemporary jewellery was an unknown field and they had a missionary zeal to educate their clients.
被评估的机构一般不知晓神秘顾客的特定身份和目的。
The mystery consumer's specific identity and purpose is generally not known by the establishment being evaluated.
被评估的机构一般不知晓神秘顾客的特定身份和目的。
The mystery consumer's specific identity and purpose is generally not known by the establishment being evaluated.
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