E-books now constitute 10% of total book sales, up from 1% two years ago, according to DailyFinance.

根据每日金融的说法，电子书的销量从一年前占总售书量的1%到现在的10%.

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By far, the largest e-commerce category in Brazil is grocery sales: they constitute 39% of total e-commerce in Brazil versus 3.4% in the U.S..

迄今为止，巴西最大的电子商务类型就是杂货销售，占据了巴西整个电子商务的39%，而美国的比例仅是3.4%。

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Information networks constitute the major tasks of office automation, e-government network supervision.

信息网络化的主要任务构成是办公自动化、电子政务、网络监管。

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Travelocity and the FAA recommended printing out a copy of the reservation receipt, which could be an e-mail message, although it was unclear what would constitute a valid receipt.

CNN: FAA imposes restrictions on e-tickets