学个词 Learn A Word: 3080 nosedive 大跌，暴跌

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New CDC research shows that birth rates for teens in the United States continued to nosedive in 2017, dropping 7 percent from the year before. 美国疾病控制与预防中心的最新研究数字显示，2017年美国十几岁年龄段的生育率继续大跌，比一年前下降了7%。

Western European smartphone shipments nosedived in the first quarter of 2018, according to a market research company. 一家市场调研公司表示，西欧智能手机的货运量2018年第一季度大幅度下跌。

好的，我们今天学习的词是 nosedive, nosedive, nosedive ...

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