树结构的各个部分由执行的语句类型决定。

The parts of the tree structures are determined by the type of statement executed.

youdao

接受默认的语句类型(SELECT)并选择使用SQL构建器。

Accept the default for the statement type (SELECT) and elect to use the SQL builder.

youdao

把鼠标指针移动到饼图的每个部分上，就会看到这种语句类型的百分比。

Move the pointer over each section of the pie chart to view the percentage for the statement type.

youdao

For now the way to think about this is, cp2 when I call that class definition, it goes off and allocates a specific spot in memory that corresponds to that instance.

这个语句所做的，就是建立了，这个类型的实例cp1和，这个类型的特定版本,现在你们可以这么认为。

麻省理工公开课 - 计算机科学及编程导论课程节选