Software update alert 软件更新提醒
But this kind of update might cause accessibility problems because it is very hard to alert users with disabilities when updates occur.
但是，这种更新可能会导致一些可访问性问题，因为在更新发生时很难提醒残疾用户。
Traffic lights could alert cars when they are about to change, or broadcast the latest congestion update to waiting vehicles.
交通灯可以用来提醒司机转向或者为等候的车辆播放最新的车辆阻塞状况。
Here you can alert the user to the fact that an update error has occurred.
这里，您可以警告用户发生了更新错误。
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