...中，经过充分的竞争和市场选择，目前美国个人征信服务市场形成了以EQUIFAX公司、益伯利（Experian）北美公司和环联（Transunion）公司等三大全国性消费者征信服务公司为主体，其余400余家小型或地方型消费者征信服务公司共存的市场格局。
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葫环联脲这类新型主体分子正受到化学家们的广泛关注，并逐渐成为超分子化学研究领域中的一个热点。
Cucurbituril, as a novel synthetic receptor, has attracted considerable attentions of chemists. The supramolecular chemistry of cucurbituril gradually turns into a hot field.
对葫环联脲主体分子的合成、分子识别、超分子催化、分子组装等领域的新近研究进行了较为详尽的综述。
The recent research progress of cucurbituril including synthesis of cucurbituril and their derivatives, their molecular recognition, supramolecular catalysis, molecular assembly was reviewed.
在美国，三家主要的征信机构(Equifax，环联，百利)允许消费者通过网站退订相关的信用卡优惠宣传材料。
In the United States, the three major us credit bureaus (Equifax, TransUnion and Experian) allow consumers to opt out from related credit card solicitation offers via its opt out Pre Screen program.
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