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解析四级词汇:alert

alert [lrt]adj.①留神的,注意的 ②警觉的,警惕的n.①警戒,戒备 ②警报vt.①向……报警 ②使认识到The police have been alerted that a second prisoner has escaped. 警察已经接到报警,又有一个犯人逃走了。The guards were on the alert all the time. 卫兵一直处于警戒状态。He’

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alert [lrt]adj.①留神的,注意的 ②警觉的,警惕的n.①警戒,戒备 ②警报vt.①向……报警 ②使认识到The police have been alerted that a second prisoner has escaped. 警察已经接到报警,又有一个犯人逃走了。The guards were on the alert all the time. 卫兵一直处于警戒状态。He’s alert to the dangers ahead. 他对前面的危险保持着警惕。搭配:air raid alert 空袭警报There were 15 minutes between the first air raid alert and the sounding of the all-clear signal. 从第一个空袭警报到警报解除号音其间有15分钟。警觉The cat is alert to every sound and movement. 那只猫对任何响动都很警觉。on the alert 警戒着,随时准备着,密切注视着While the bees are making honey, they are on the alert for intruders and will sting anyone who draws too near. 在制造蜂蜜时,蜜蜂会时刻提防入侵者,它们会蛰任何靠得太近的人。alert sb. to sth. 提醒某人注意某事

解析四级词汇:alert

alert [əˈlɜːrt]

adj.①留神的,注意的 ②警觉的,警惕的

n.①警戒,戒备 ②警报

vt.①向……报警 ②使认识到

  • The police have been alerted that a second prisoner has escaped. 警察已经接到报警,又有一个犯人逃走了。
  • The guards were on the alert all the time. 卫兵一直处于警戒状态。
  • He’s alert to the dangers ahead. 他对前面的危险保持着警惕。

解析四级词汇:alert

搭配:

air raid alert 空袭警报

There were 15 minutes between the first air raid alert and the sounding of the all-clear signal. 从第一个空袭警报到警报解除号音其间有15分钟。

be alert to 对……警惕,对……警觉

The cat is alert to every sound and movement. 那只猫对任何响动都很警觉。

on the alert (for/against) 警戒着,随时准备着,密切注视着

While the bees are making honey, they are on the alert for intruders and will sting anyone who draws too near. 在制造蜂蜜时,蜜蜂会时刻提防入侵者,它们会蛰任何靠得太近的人。

alert sb. to sth. 提醒某人注意某事

解析四级词汇:alert


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