After a period of time, people started to recognize that one significant problem was round-tripping.

经过一段时间之后，人们开始认识到其中一个显著问题是往返旅程。

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No round tripping: there's no "round trip" support for iterative model changes, because the generated code is static.

不能往返：对于模型反复进行的更改不支持 “往返” 操作，这是因为所生成的代码是静态的。

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The idea of round tripping is the continuous switching between the BPMN analysis model and the executable process.

双向工程的思想是在BPMN分析模型和可执行过程之间可以不断地切换。

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Mr Thornton added that "there is plenty of anecdotal evidence to suggest that exporters are faking orders and 'round-tripping' in order to gain government export tax rebates".

BBC: China's March trade deficit may signal key import shift

Moreover, there appears to be another stratagem that exporters extensively used in December, the round-tripping of goods through special trade areas and bonded warehouses to earn substantial value-added-tax rebates.

FORBES: China's Market-Moving Trade Data Is Inaccurate

But, experts say, it also allows Indians to launder vast amounts of untaxed wealth by sending their illegal cash to Mauritius, then "round-tripping" it back to India in the form of legal investments.

NPR: In India, Dodging Taxes Is Part Of The Game