阅读下面的短文,然后把画线的句子翻译成汉语。 The year 2000 has been tough for online retailers. (1) Changes in the market have driven many sites out of business, and many others are only barely surviving. The holidays, promising greatly increased sales, offer hope for many e-commerce sites. (2) The good news for retailers is that the holiday market will grow; this year's holiday sales are predicted to be 66% higher than last year's. (3) In a year when over half the U.S population has access to the Internet, e-commerce sites can expect dramatic increases in site traffic before the holidays. Forrester Research predicts $10 billion in holiday revenues, and Jupiter forecasts the U.S. holiday market as $12 billion. Gartner Group predicts $10.7 billion in North American holiday sales and worldwide sales of $19.5 billion. While revenue estimates vary, it's clear that Holiday 2000 will be big for e-commerce. Customers will shop online this holiday season for convenience; by shopping online, customers avoid crowds, transportation hassles, and inconvenient store hours. One customer commented in our tests that she would shop online "to avoid the hassle of going to different stores." Another shopper said (4) that buying gifts online is a lot easier because of the lines in the stores. Despite the eager shoppers and the predictions of a big holiday season, there is bad news for online retailers: the e-commerce industry is losing billions of dollars in potential sale. (5) Shoppers want to purchase online, but many sites make it too hard to buy.