alertness
                                                    英 [ə'lɜːtnəs]
                                                                        美 [ə'lɝtnɪs]
                        
                
                
                
                
                    
                                    
                
                                                                                                        alertness 英文词源
                
                
                    
                        - alertness (n.)
- 1714, from alert + -ness.
 
                
                                                    alertness 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