This is the 8014th most frequent Chinese word.
alert
The Chinese word for "alert" (警觉) means being watchful and quick to notice danger or changes.
Here, '警觉' (alert) is used as an adjective to describe someone being attentive or vigilant to a situation or potential danger.
当他听见警报响起时，他立刻变得警觉起来。
When he heard the alarm sound, he immediately became alert.
In this case, '警觉' (alert) reflects a state of readiness or caution in facing an anticipated event or condition.
我们必须对即将到来的风暴保持警觉。
We must remain alert to the approaching storm.
Here, '警报' (alert) is a noun, referring to a warning message issued to inform people of danger or necessary precautions.