Their model may not be quite that, but nor does it sit altogether comfortably within trade economists' established way of thinking.

他们的模型也许未必如此（激怒传统经济学家），但这个模型的思想基础于传统经济学完全不同。

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Offsetting positions that were established prior to the effective date do not have to be liquidated, but once either position is closed out after May 15, it may not be reestablished as a hedge.

在此生效日期之前开立的对冲头寸并不需要清算，但一旦那些仓位在5月15日后关闭，就不能重新开立相反的头寸来对冲。

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Their model may not be quite that, but nor does it sit altogether comfortably within trade economists' established way of thinking.

ECONOMIST: Does economics need a new theory of offshoring?