alertness

过去式：

动词过去式: alerted

更多词形：

动词过去式: alerted | 动词过去分词: alerted | 动词现在分词: alerting | 动词第三人称单数: alerts |

单词例句：

You must be alert to the hidden danger.

你必须对隐藏的危险保持警觉。

Ginseng was reported to have increased energy and mental alertness.

人参可以增进体力和提高精神敏捷性。

The boy was alert in answering the stranger's questions.

男孩很机敏地回答了陌生人的问题。

A sparrow is very alert in its movement.

麻雀的动作很敏捷。

The general impression is that of power, agility and alertness.

给人的一般印象是力量、敏捷和机警。

Her work is extraordinary rich and alert.

她的作品特别华丽而灵活。

We should stand by on a hurricane alert.

在暴风雨警戒期间我们应加戒备。

They also increase alertness and energy.

它们也能提高机敏性和精力。

He reacts to his surroundings with great alertness.

对周围环境具有高度的灵敏性。