（一）发生增值税法第三条至第五条以外的经营活动，并取得与之相关的货币或者非货币形式的经济利益；
"Before that, in much of Europe, you could love as many people as you like, and love was fluid, and it was often not about sex."
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Екатерина Графская (Редактор отдела «Наука и техника»)。业内人士推荐快连下载安装作为进阶阅读
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。