Even though the task takes longer, the bottleneck is removed and tokens no longer queueup.
即使任务占用的时间较长，但消除了瓶颈，并且令牌不用再排队。
2
Should load exceed the capacity of the system, messages will queueup irrespective of the maximum messages value.
如果负载超过了系统的容量，则不管最大消息的值是多少，消息都将排队等候。
3
With the opening of the visitor centre, sightseers will pass through metal detectors and queueup for tours amid air conditioning and plentiful lavatories.