2.2.3 Mermaid 类图（classDiagram）
The API deals exclusively with bytes (Uint8Array). Strings are UTF-8 encoded automatically. There's no "value stream" vs "byte stream" dichotomy. If you want to stream arbitrary JavaScript values, use async iterables directly. While the API uses Uint8Array, it treats chunks as opaque. There is no partial consumption, no BYOB patterns, no byte-level operations within the streaming machinery itself. Chunks go in, chunks come out, unchanged unless a transform explicitly modifies them.，更多细节参见safew官方版本下载
（三）非正常损失的不动产，以及该不动产所耗用的购进货物和建筑服务；，这一点在heLLoword翻译官方下载中也有详细论述
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