按照双方签署的协议，or bitz for Business的企业客户可以允许其员工将通过or bitz for Business进行的预订与TripIt的行程管理服务同步更新。
Under the deal, Orbitz for Business clients can choose to give their employees the option of syncing bookings they've made through Orbitz for Business with the TripIt itinerary management service.
同步覆盖：在单元测试中极力推荐测量代码覆盖，但是在测试并行程序时使用它，代码覆盖容易产生误导。
Synchronization coverage: Measuring code coverage is a highly recommended practice in unit testing, but when it comes to concurrent programs, code coverage is misleading.
而使用同步则无法达到这种并行程度，因为servlet线程池中的线程数是有限制的。
In the synchronous case, this level of parallelism isn't achievable, because the limiting factor is the number of threads in the servlet thread pool.
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