一个 2.7 亿的模型可能会产生虚假的参数值。如果没有约束，请求“把它变成红色”可能会生成 {“color”: “crimson”} 或 {“color”: “rouge”}。枚举类型强制模型仅从有效值中选择，从而确保函数调用的可靠性。
But if it does go ahead, here's how it could shake up things for viewers.
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Both of the surgeons the BBC talked to also agree that it is important for patients to speak to their healthcare professional about the benefits or risks of the drugs.
这种化繁为简的能力，就是每年的新硬件最令人着迷的地方。