VDSL技术被视为不对称数字用户线(ADSL)的下一代产品——这是对ADSL概念的扩展，故其现在还处在研究阶段。
VDSL technology is considered as the next generation product of the Asymmetrical Digital Subscriber Loop (ADSL), which is the conception expansion of ADSL, so it is in the research stage.
保险交易中存在的信息不对称决定了保险业较其他行业对信用的要求更高，良好的信用是保险业的生命线。
Asymmetric information in insurance exchange decide higher demand on insurance industry compared with others, good credit is the lifeline of insurance industry.
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