Alertness
[ [ə'lə:tnis] ]
出国 Abroad
n. 警戒, 机敏
✅ 同义词
📖 牛津释义
alertness
n [U].
🗣️ 情景例句
You did the best you could.
你已经尽力而为了。
His visit was well timed.
他的访问正合时宜。
At the front of the classrooom.
在教室前排。