The system is capable of the concept hierarchy knowledge representation for various domain-knowledge and of making transaction table.

该系统具备多种领域知识的概念分层表示功能、事务表编制功能，实现了知识发现的基本功能。

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But technology has reduced transaction costs, making sharing assets cheaper and easier than ever-and therefore possible on a much larger scale.

但是，技术已经降低了交易成本，使得共享资产比以往更便宜、更容易——因此，在更大的范围内共享资产是可能的。

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Just as a bank will check your credit rating before offering you a mortgage, so too will a potential customer on a collaborative marketplace check feedback and ratings before considering making a transaction.

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Yet, even after making allowances for transaction costs, the results are depressing.

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To compare it fairly to a sales tax you need to double it, since it is on both sides of the transaction making the rate 0.70%.

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