美国两位应用数学家研究发现，一周中最郁闷的一天是周三，而不是周一。
Wednesday – not Monday – is the worst day of the week, according to research by two American applied mathematicians。
美国两位应用数学家研究发现，一周中最郁闷的一天是周三，而不是周一。
Wednesday not Monday is the worst day of the week, according to research by two American applied mathematicians.
以 Fitbit 为例，该公司在周一发布了其第一款智能手表，它的销售目标很明确——提高你的健康水平，并将其宣传为“工具，而不是玩具”。
Fitbit, for example, released its first smartwatch on Monday, selling with a clear purpose—to improve your fitness—and promoting it as a "tool, not a toy".
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