单词解析：Alert

中文含义： 警报，警戒

英语词性： 副词/形容词/动词/名词

美式发音：əˈlɝt

同义词：warning, signal, notification

易混淆单词：alarm, prompt, caution

双语例句：

1. When the storm hit, the National Weather Service issued an alert advising people to stay indoors.

当暴风雨袭击时，国家气象局发布了一份警报，建议人们留在室内。

2. The guard at the museum is always alert and ready for any suspicious activity.

博物馆的警卫总是警觉，随时准备应对任何嫌疑行为。

3. The school district sent out an alert to parents that classes would be cancelled due to snow.

学区向家长发出警报，因为下雪学校停课了。

4. The company alerted its employees to the upcoming layoffs.

该公司警告员工即将裁员。