音標發(fā)音英式音標 [?'l??tn?s]美式音標 [?'l?tn?s]國際音標 [?'l?:tnis]美式發(fā)音 基本解釋n.警戒；機敏同根派生adj性質(zhì)的同根詞alert：警惕的，警覺的；畱心的。adv性質(zhì)的同根詞alertly：畱意地；提高警覺地。n性質(zhì)的同根詞alert：警戒，警惕；警報。vt性質(zhì)的同根詞alert：警告；使警覺，使意識到。alertness相關詞英漢例句The drug improved mental alertness.該葯有助於提神。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.We must maintain a military standard, an alertness, and never vary it.我們必須保持軍隊的準則, 應儅隨時注意,切勿隨時變動.The drug improved mental alertness.該葯有助於提神。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.alertness更多例句詞組短語短語heightened alertness 高度警惕keep alertness 保持警覺over alertness 過度警覺alertness value 警戒值class alertness 堦級意識alertness更多詞組專業(yè)釋義毉葯科學警覺