alertness [ə'lə:tnis]以下由轻松背单词网站提供
单词级别附加级基本释义n.警觉参考例句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。 推荐阅读 |