哪一个行为需要补偿由活动来定义：调用活动通过一个服务来定义在活动的forwards进程中将调用哪个进程。

Which actions need to be compensated is specified by the activity: an invoke activity has a service defined which is invoked during the forward processing of the activity.

youdao

哪一个行为需要补偿由活动来定义：调用活动通过一个服务来定义在活动的forwards进程中将调用哪个进程。

Which actions need to be compensated is specified by the activity: an invoke activity has a service defined which is invoked during the forward processing of the activity.

youdao