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词汇 2G
释义 ˌsecond-geneˈration

adjective

[] used to describe technology, a product, etc. that has been developed and improved since it first appeared(技术、产品等)第二代的,改进型的Second-generation e-learning no longer just provides information, but instead forces the student to make choices and decisions.第二代网络教学系统已经不再是仅仅提供信息,而是迫使学生作出选择和决定。 ( 2G) used to describe mobile telephone networks without wires that were the first to use digital technology第二代的(指首次使用数字技术的第二代移动通讯网络)second-generation cellphones第二代手机
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