alertness
英 [ə'lɜːtnəs]
美[ə'lɝtnɪs]
- n. 警戒；机敏
词态变化
形容词: alert;
英文词源
- alertness (n.)
- 1714, from alert + -ness.
双语例句
- 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