周四，三大指数高低低走，尾盘跌幅加速，最终大幅收跌。道指早间一度上涨超过700点，最高上涨至 46856.75点，此后逐渐转跌，最低下跌至45728.93点，全天振幅超过1100点。纳指盘中最高上涨至 23147.33点，最低降至22043.20点，振幅亦超1100点。 英伟达(NVDA.US)发布了爆炸性盈利结果、美国公布一份确认经济基础依然强劲的就业报告，尽管所 有迹象都指向美国股市应该是"风险偏好"的一天，但交易大厅的乐观情绪并未持续太久。关于这次反转 背后的原因众说纷纭。一些交易员指出，围绕AI是否产生了足够的收入或利润来证明其巨大支出是合 理的担忧重新浮现。另一些人说，加密货币跌至自四月以来的低点是股市暴跌的部分原因。 Susquehanna International衍生品策略联席主管Chris Murphy表示："随着英伟达财报现在尘埃落定，以及 美联储不太可能在12月降息，投资者开始质疑还有什么可以推动年终行情。据报道，CTA仓位在这里仍 然很脆弱，系统性策略仍处于温和净多头状态，更深的回调将触发量化基金的自动平仓机制，可能会迫 使额外的抛售。" 【美股】截至收盘，道指跌386.51点，跌幅为 ...

Android’s Quick Share now works with iPhone’s AirDrop, starting with the Pixel 10 lineup https://t.co/3Cvtn9Mxde ...

Core Viewpoint - Bluetooth is a ubiquitous wireless connection standard that connects various devices, including headphones, speakers, smartwatches, and more, while also evolving through its history and upcoming developments [1][3]. Group 1: How Bluetooth Works - Bluetooth operates using high-frequency radio waves in the 2.4 GHz band, similar to Wi-Fi, but employs adaptive frequency hopping (AFH) to avoid interference [3]. - Bluetooth has low power consumption and a smaller range compared to Wi-Fi, with backward compatibility across versions [3]. Group 2: Bluetooth History - Bluetooth was named after King Harald "Bluetooth" Gormsson and originated from a 1996 meeting among Intel, Ericsson, and Nokia, with the first version released in 1999 [7][8]. - Major versions and their improvements include: - Bluetooth 1.2 (2003): Addressed Wi-Fi interference and improved pairing speed [12]. - Bluetooth 2.0 (2004): Enhanced data rate (EDR) increased speed from 1 Mbps to 3 Mbps [12]. - Bluetooth 4.0 LE (2010): Introduced low energy consumption [12]. - Bluetooth 5 (2016): Increased range from approximately 50 meters to over 200 meters [12]. - Bluetooth 5.3 (2021): Improved audio quality and power efficiency [12]. - Bluetooth 5.4 (2023): Enhanced security and reduced latency, with features for electronic shelf labels (ESL) [12]. Group 3: Upcoming Developments - Auracast, announced in 2022, will allow multiple users to connect to the same audio stream in public spaces, enhancing accessibility for individuals with hearing impairments [13][14]. - Devices must support Bluetooth 5.2 or higher to utilize Auracast, and widespread adoption may take time due to the need for compatible broadcasting equipment [14].