Structural constraints persist.
结构性制约因素依然存在。
An example is that only a certain type of constraint needs to be checked such as structural constraints.
举个例子,比方说,只需要检查某种类型的约束,例如结构性约束。
Unfortunately, these predictions are largely extrapolations from the recent past and they overlook serious structural constraints.
遗憾的是,这些预测在很大程度上都来自最近的推算,忽略了重大的结构性限制。
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