Unfortunately, D is not available if the upper branch executes.

不幸的是，在上面的那个分支执行时，D是不可用的。

youdao

The upper branch leads to a fork that causes Task 1 and Task 2 to execute in parallel.

上面的分支通向一个fork，后者可以使Task 1和Task 2并列执行。

youdao

Because XML columns cannot participate in Group By clauses, you need to define a second XML Relational Mapping operator (shown on the upper branch of Figure 1).

因为xml列不能参与group By子句，所以需要定义第二个XML Relational Mapping操作符(图1中上方的分支)。

youdao

Twenty-nine died on April 5 in an explosion at the Upper Big Branch mine in West Virginia, operated by the Massey Energy Company.

VOA: standard.2010.04.27

The Legislative Council is the upper branch of Tynwald and has 11 members.

BBC: Tynwald Chamber

Page was a member, identifying himself as a Northern Hammerskin, part of the group's upper Midwest branch.

CNN: Hate with a beat: White power music

Thirty-one workers were inside the Upper Big Branch mine when an explosion ripped through its walls on Monday afternoon.

WHITEHOUSE: President Obama on WV Mine Tragedy and Justice Stevens