The update is then made with a conditional expression to only update if this field is the same as when the data was read.
然后，用条件表达式进行的更新只会在该字段就是数据被读出的那个字段进行。
An example of a standard associated with contract expression is the CRUD (create, read, update, delete) convention traditionally used to outfit components with a predictable set of methods.
服务表达相关的标准的一个例子是CRUD(增删改查)，传统上，它用于给组件配备一组可预见的方法。
The problem with using regular expression code to read XML is that it doesn't check first to make sure that the XML is well formed.
使用正则表达式代码读取XML的问题是，它并没先进行检查，确保XML的格式良好。
Then she opened her new book and began to read. Jo put her arm round her and, leaning cheek to cheek, read also, with the quiet expression so seldom seen on her restless face.
说完她打开新书读了起来，乔用胳膊拥着她，与她并肩而读，不安分的脸上露出少见的宁静。
The benefit with using the query syntax approach is that it ends up being a little easier to read and write. This is especially true as the expression gets richer and more descriptive.
用查询语法的好处是它更易读和易写一些，显然是这样，因为表达式变得更具有表达性。
The benefit with using the query syntax approach is that it ends up being a little easier to read and write. This is especially true as the expression gets richer and more descriptive.
用查询语法的好处是它更易读和易写一些，显然是这样，因为表达式变得更具有表达性。
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