让我们来分解一下：<start_function_call — 函数调用开始，call: — 前缀，change_background_color — 函数名，{color:<escapered<escape} — 带转义标记的参数，<end_function_call — 函数调用结束。
curtailing their business hours to make more time for daily closing. By 1950,，推荐阅读快连下载-Letsvpn下载获取更多信息
，这一点在旺商聊官方下载中也有详细论述
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“The Air Force has started performing better”: Zelenskyy says restructured air defenses are delivering results