This would free them to transact business across state lines.

这会使他们自由地跨越州界进行商业交易。

《柯林斯英汉双解大词典》

Transact business—Users can get a quote for new insurance policies and make an endorsement to a policy.

交易业务 - 用户可以收到新保险条例的报价，并且可以背书采用条例

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We would like to redirect these buyers to your company so they can transact business with you directly.

我们会将这些购买者导向您的公司，这样他们就可以直接于您进行交易。

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Bitcoin offers privacy and, perhaps most important, an easy way to transact business across borders.

WSJ: The Weekend Interview With Gavin Andresen: Bitcoin vs. Ben Bernanke

At the same time the Internet offers a splendid new medium through which to transact business.

ECONOMIST: From dot.com to dot.bomb

In the past five years, businesses have realized that mobile is changing how we engage with customers and how we transact business.

FORBES: Worklight Brightens IBM's Mobile Strategy