First, you need to add a task definition to the build.xml file.

首先需要在build . xml文件中添加一个任务定义。

youdao

Task definition has various influence on reliability, responsiveness, and assurance.

工作认知对可靠性、反应性和保证性均有不同程度的影响。

youdao

When all this is done, a task definition can be extended with numSignatures attribute (Listing 5)

当完成这些工作，任务定义就被扩展可以使用numSignatures属性（清单5）

youdao

Finally the activity or task also needs to have a contextual definition.

FORBES: Connect

This sorry state of affairs is creating two types of guys: those who, filled with insecurity, battle to whip their aging muscles into something resembling definition, and those who, in the face of an impossible task, just give up.

WSJ: Hollywood's New Arms Race: Actors With Muscles