（六）放射性同位素，是指化学元素中具有相同原子序数，但质量不同且能发生放射性衰变的核素。
Alternative distribution strategies and business models
。新收录的资料对此有专业解读
Apple has also given the connectivity chips a more serious upgrade, retiring the old Qualcomm modem. The new iPad Air features the N1 wireless connectivity chip introduced with the iPhone 17 and the C1X 5G chip introduced with the iPhone Air.。新收录的资料是该领域的重要参考
接着，我提供了一些开头，让 Claude 继续续写：
(default), unfocused (only when the terminal is not focused), or