alertness

1 . The drug improved mental alertness .

该药有助于提神。

来自柯林斯例句

2 . Alertness, calmness, courage : he could see them all in the youngster's face.

机警, 镇定, 胆量,都摆出在这年青人的脸上.

来自子夜部分

3 . We must maintain a military standard, an alertness, and never vary it.

我们必须保持军队的准则, 应当随时注意,切勿随时变动.

来自辞典例句

4 . The order urged the armed forces to enhance their alertness .

该项命令敦促武装部队提高警惕.

来自辞典例句

5 . 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.

来自辞典例句