用完全形式重写这些句子。
PayPal从来没有成为完全形式的货币：美元还是货币，PayPal是交易方式。
PayPal never became a fully-formed currency: the dollar remains the currency, and PayPal the transaction method.
象棋完全可以用一个完全形式化的规则列表去描述，而这个份列表是程序员预先提供好的。
Chess can be completely described by a very brief list of completely formal rules, easily provided ahead of time by the programmer.
提出的方法是完全形式化的，具有较强的语义表达能力，便于工作流的执行、推理和仿真等。
The method is complete formalizations, and it has a strong capability of semantics express. The formalizations can be used as a foundation for workflow execution, reasoning, and simulation.
代理是“代理的完全形式，无权代理是“代理”的缺陷形式，表见代理是“无权代理”的变异形式。”
Agency is the complete form of "agency", unlawful agency is the defective form of "agency", superficial agency is a variation of unlawful agency.
基于完全形式化语言的测试也是近年来研究的重点，不少学者提出了基于Z等形式化语言的测试方法。
Software testing based on formalization is also an important issue in recently research work. Many scholars studied testing methods based on formal language such as z.
研究人员曾认为，这两种形式的同理心都完全形成于儿童时期。
Researchers used to believe that both forms of empathy were fully formed during childhood.
研究人员曾认为，这两种形式的同理心都完全形成于儿童时期。
Researchers used to believe that both forms of empathy were fully formed during childhood.
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