alert
Definition
Waking or wide-awake, often watching or listening carefully
中文 清醒或警觉，常常在观察或倾听
Example
"The guard was alert and on the lookout for any suspicious activity."
Waking or wide-awake, often watching or listening carefully
中文 清醒或警觉，常常在观察或倾听
"The guard was alert and on the lookout for any suspicious activity."