如果员工遗漏了关键更新或是用非法方式操作了设备，系统会及时向IT部门发出警告。
And if workers miss an important update or start using their devices in an unauthorized way, the system alerts the IT department.
而我们所需要的是一种廉价的能够测出毒气的方法，从而及时发出警报，并且这种方法还要能够鉴别出毒气的类型，好让那些已经中毒的人得到及时的治疗。
What is needed is a cheap way of detecting such gases and, having raised the alarm, of identifying which gas is involved so that anyone who has succumbed can be treated.
许多应用需要在程序无响应或不可用时及时发出警告。
Many applications require that someone be alerted as soon as the application becomes unresponsive or unavailable.
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