alertness

alertness 基本解释

n. 警戒, 机敏

同词根

词根：alert

1、alert a. 警觉的, 灵敏的, 留心的 n. 警报 vt. 使警觉, 通知, 使意识到

2、alertly adv. 警觉地, 留意地

词组短语

1、attention-alertness test [医] 精神敏捷试验

2、physical energy and alertness 体力和警觉性

alertness 用法和例句

1、sports alertness.

运动机敏性

2、exhibit calmness and alertness

表现沉着机敏

3、deficient in alertness or activity.

缺少机敏或者活动性。

4、They also increase alertness and energy.

它们也能提高机敏性和精力。

5、Fear brings about a heightened state of alertness.

恐惧使得人们提高了警惕程度。

6、He reacts to his surroundings with great alertness.

对周围环境具有高度的灵敏性。

7、The job requires constant alertness and vigilance.

这种工作需要常备不懈时刻警惕。

8、The sentry was praised for his alertness in his post.

哨兵因他站岗时的机警而被称赞。

9、Light increases levels of alertness and will delay sleep.

光线增加警醒度，并延迟睡眠。

10、It made some evolutionary sense, that state of alertness.

那种警觉的状态会形成某种进化感。