首先，在公共模块中定义 expect 接口，作为跨平台的统一契约。这包括一个抽象字节数组类型和转换函数，通过扩展方法简化调用。
Apple’s satellite features are designed for situations where cellular and Wi-Fi coverage are unavailable. In supported regions, compatible iPhone 14 or later models can connect directly to a satellite to send messages, access Emergency SOS and share location data. Location sharing via satellite is particularly useful when traveling in remote areas, hiking or driving through regions with limited network coverage. This guide explains what is required to use location sharing via satellite on an iPhone, how to prepare the feature in advance and how to send your location when no signal is available.
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做强“大通道”，重塑开放新优势——
这场战争塑造了今天中东的每一条边界。双方争夺的焦点，恰恰就是今天的 伊拉克和高加索地区。
Beyond update dates, freshness signals include referencing recent events, citing current statistics and data, mentioning the current year in context where relevant, and updating examples to reflect current tools and practices. These signals reassure both AI models and human readers that the information hasn't become outdated even if the core topic is relatively stable.