The objects in the function object's [[scope]] property are copied into the scope chain in the same order.

首先将函数对象[[scope]]内部属性中的对象，按顺序复制到作用域链中。

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When the function exits, the call object is removed from the scope chain.

在函数退出时，调用对象就会从作用域链中去掉。

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When no nested functions are involved, the scope chain is the only reference to the call object.

如果不涉及到内嵌函数，这个作用域链是唯一引用到调用对象的。

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Going forward, we expect it to increase gradually to around 22%, as the company believes that there is further scope for optimizing its supply chain and improving operational efficiency.

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