It continues until no COBOL program is active in the execution stack for any of the threads.

这种情况将一直持续下去，直到任何线程的执行堆栈中再也没有活动的COBOL程序。

youdao

The number of threads in the group should be no larger than the depth of the deepest lock hierarchy possible in the system.

组中线程的数量应该不大于系统中最深的锁层次结构的深度。

youdao

And remember, thanks to DWR's exploitation of Jetty Continuations, no threads are tied up on the server while the client is waiting for a new event to arrive.

请记住，正是由于DWR使用了Jetty Continuations，当客户机等待新事件到来时不会占用服务器上面的线程。

youdao