前两个回调方法：subscribed(int, byte[]) 和 unsubscribed(int) 主要针对想要监视订阅确认的客户机。
The first two callback methods, subscribed(int, byte[]) and unsubscribed(int), are for clients that want to monitor subscription acknowledgments.
健康保护局昨天公布的数据显示，直到上个月底，公共卫生监视组织确认在英格兰和威尔斯发现449起麻疹病例。
Figures released yesterday by the health Protection Agency show that the public health watchdog confirmed 449 cases of measles in England and Wales by the end of last month.
确认无人可以侵犯战俘，确认战俘受到合适的监视以防止逃脱，确保战俘安全到达战俘处理地点。
Make sure that nobody is allowed to abuse them, make sure they are properly guarded to prevent escape, and make sure they arrive safely at the POW processing point.
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