Word · Frequency #19835
alertnesses
警觉;警惕;戒备
alertnesses is the plural of alertness.
核心释义
多指对危险或紧急情况的警觉状态
the state of being alert and ready to respond
- 1.
The quality of being alert or on the alert.
- 2.
专注警觉
the process of paying close and continuous attention
- 3.
戒备状态
a state of readiness to respond
- 4.
活跃的注意力
lively attentiveness
专注;留心;专注警觉;戒备状态;活跃的注意力;警戒
用法In use
Driving in heavy rain demands extra alertness.
用法提示:alertness 为名词,指需要保持的警觉状态。
A good night's sleep can greatly improve your mental alertness during the day.
用法提示:alertness 作名词,表示思维上的专注与机敏。
The security guard's alertness stopped a suspicious person from entering the building.
用法提示:alertness 为名词,表示戒备、警惕的品质。
alertness to sth
to 后接引起警觉的事物,如 danger、change 等。
His alertness to small changes made him a good editor.
他对细微变化的警觉使他成为一名好编辑。
alertness in doing sth
in 后接动名词,说明在哪个动作或过程中表现出警觉。
相关词与表达Connections
搭配Collocations
- mental alertness
- 精神警觉
- Pilots must maintain mental alertness throughout a long flight.飞行员在整个长途飞行中必须保持精神警觉。
- heightened alertness
- 高度警觉
- The soldiers remained in a state of heightened alertness.士兵们保持着高度警觉的状态。
- maintain alertness
- 保持警觉
- Take short breaks to maintain alertness while studying.学习时短暂休息一下以保持警觉。
- loss of alertness
- 警觉性下降
- Sleep deprivation leads to a loss of alertness and slows reaction times.睡眠不足会导致警觉性下降,并使反应变慢。
- levels of alertness
学习提示Learner notes
记忆技巧Memory Tip
alert 是“警觉的”,-ness 表状态;联想警报响起时瞬间专注、进入戒备的状态,就是 alertness。
语境与语域Context & Register
语域:neutral 常见场景:驾驶、值班、健康监测 该词为中性词,通常用于需要保持专注、留意或随时准备应对的场合,如驾驶、值班或健康观察;在正式和日常语境中都比较常见。
发音与拼写Pronunciation & Spelling
“alertness” 的重音在第二个音节 /lɝt/,没有常用词与它整词完全押韵。alert、assert、dessert 的重读部分以 /ɝt/ 结尾(alertness 的 /lɝt/ 也含 /ɝt/),但这不是整词押韵。awareness、happiness、brightness 是拼写上的形近词,都带 -ness 后缀,也有相同的 /nəs/ 尾音,但重读元音不同,因此发音并不同。
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.