If that's true, it's true, again, what's being sold in markets, in many cases information products information services.
那样,同样地,市场中的商品,许多时候是,信息产品,信息服务。
I should have also mentioned another really important information technology that developed in the nineteenth century was the Postal Service, although we had mail before then.
我应该也提到过,另一个产生于19世纪的,非常重要的信息技术,就是邮政服务,虽然我们在此之前就有信件往来。
Just a few reminders, if any of you are here for the first time, and I know there are a few, if you go to this particular website, and you can get to this from the classes server as well, you'll see the course website that we've developed and it has a lot more information than if you just go to the classes server and click on the syllabus.
提醒一句,如果有同学是第一次来听课,我看到了有些新面孔,你们可以登录这个网站,从课程服务器也能找到,你们会发现我们更新了课程网站,其中含有大量的信息,若你只访问课程服务器,点击教程大纲
This particular website has this free nutrient analysis On the website people may choose to get involved in and there may be charges for those things, I don't really know, but there may be and then they may ask you for identifying information, but it's your option to do that.
网站的营养分析服务,在该网站,人们可以选择使用其他服务,当然,那些可能是收费的,我不是很确定,可能有收费服务,并要求验证个人信息,但这由你自己选择
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