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此前，美国对中国商品加征10%的关税，而且重要的是，美国还取消了价值800美元以下的小包裹免税进入美国的海关豁免规定。

但在公开解释这一利润增长时，亚马逊并未披露全部情况。这种信息的模糊处理使得这样一个问题悬而未决：亚马逊通过一项颇具争议的商业手段——提高数百万独立卖家的费用（这些卖家对于丰富其购物平台的线上货架至关重要）——究竟赚取了多少利润。

Investors weighed corporate earnings and economic data, including a larger-than-expected decline in U.S. retail sales. The retail sales dropped 0.9 percent in January, a sharper decline than ...

Com seu recente avanço no modelo de IA, a empresa chinesa de inteligência artificial (IA) DeepSeek atraiu muitas reações ...

作为生成式AI（人工智能）开发用的芯片（AI 芯片），GPU（图形处理器）眼下得到了广泛应用。很难想象GPU会在AI开发领域迅速消失。但是，2025年可能会成为GPU统治地位终结的一年。原因是专门用于AI处理的新型“ASIC（特定应用集成电路，Application Specific Integrated ...