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。
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，这一点在夫子中也有详细论述
While working on this over the last year, I was constantly looking for good tests to check my renderer against.
The Netherlands has the highest share of part‑time workers in the OECD, with almost half of employees working less than full time.