The advantage of using sub models is that they can exist independently of the main model.

使用子模型的优势在于它可以独立地存在主模型。

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The main characteristic of direct exports entry model is that there are no intermediaries.

直接出口输入模式的主要特点是没有中间商参与。

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Figure 13 gives you a bit of insight on how to you can split your model into fragments, or vice versa, by absorbing the fragment back into your main model.

图13让您见识了如何将模型分割为片段，或反过来，将片段引入回主模型。

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The main difference being that the more traditional model, featuring pro-rata allocation and collection of payment for order flow, is more geared towards one facet of the investing community, comprised in large part by retail investors who are using options limit orders and other very simple strategies.

FORBES: Examining The Options Flash

Through a casting company, they found a high-school model and an New York University student to play the main characters in photos and videos.

WSJ: Enhanced E-Books: Blowing Up the Book

Civil servants construct their own financial model when preparing to award long-term contracts such as the West Coast Main Line franchise.

BBC: West Coast Main Line: Taxpayers 'at risk' in rail bid