As a practitioner of agile development, I highly recommend that you use a modeling tool only for models that have long-term value.

作为敏捷开发的身体力行者，我强烈建议你只对有长期价值的模型使用建模工具。

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For models that show control flow only, both forms can be used interchangeably and the models will preserve their execution semantics.

对于仅显示控制流的模型，这两种形式可以互换，模型将保留其本身的语义。

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You can use gateway form and activity form interchangeably for process models that contain only control flow, as we discussed in the Background section in Part 1 of this article.

流程模型中的网关形式和活动形式可以互换使用，如本文第1部分中的背景部分所述。

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"Companies like Hyundai and Suzuki are basing production of some of their models only in India, which gives them volumes, so helps reduce cost for domestic sales and exports as well,".

VOA: standard.2009.09.25

Sounds clever, but be advised: this module is only for Pentax DSLRs -- and only for very specific models at that.

ENGADGET: Pentax releases O-GPS1 add-on for DSLRs, appeals to astronomy nuts

The majority of tablet buyers (until now) goes for WiFi-only models, as people do not want a second contract.

FORBES: Apple iPad Doesn't Need Hideout From Honeycomb

But is this only true for some makes and models?

FORBES: Is A Used Car Still A Good Deal?