我们来假设一下这样一个情景，卡罗尔，一个正在康复中的嗜酒者，被邀情去参加一场聚会。

Let's look at a hypothetical situation in which Carol, a recovering alcoholic, gets invited to a party.

《柯林斯英汉双解大词典》

注意：我们对此情景的假设是业务数据已经是xml格式的，尽管数据库可能没有任何XML功能。

Note: an assumption we are making for this scenario is that the business data is already in XML, even if the database might not have any XML capabilities.

youdao

现在让我们考虑一种稍微有些不同的情景，假设您想将xml值投影到返回的结果集。

Now let's consider a slightly different situation, in which you want to project XML values into your returned result set.

youdao

ReadFloat We'll look at it in a second. Let me sort of set the stage up for this -- suppose I want to input -- I'm sorry I want you as a user to input a floating point number.

名字叫,我们来看一会，我先来设置下情景-,假设我想输入，抱歉,我希望你们作为用户来输入一个浮点数。

麻省理工公开课 - 计算机科学及编程导论课程节选