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首頁英語詞典alertnessalertness的意思

alertness

英 [?'l??tn?s] 美[?'l?tn?s]
  • n. 警戒；機敏
中頻詞

詞態(tài)變化

形容詞:?alert;

英文詞源

alertness (n.)
1714, from alert + -ness.

雙語例句

1. The drug improved mental alertness.
該藥有助于提神。

來自柯林斯例句

2. Alertness, calmness, courage : he could see them all in the youngster's face.
機警, 鎮(zhèn)定, 膽量,都擺出在這年青人的臉上.

來自子夜部分

3. We must maintain a military standard, an alertness, and never vary it.
我們必須保持軍隊的準則, 應當隨時注意,切勿隨時變動.

來自辭典例句

4. The order urged the armed forces to enhance their alertness.
該項命令敦促武裝部隊提高警惕.

來自辭典例句

5. Ginseng was reported to have increased energy and mental alertness.
人參可以增進體力和提高精神敏捷性.

來自辭典例句