at once

/æt wʌns/ 139
without delay or hesitation; with no time intervening; "he answered immediately" "found an answer straightaway"

noun [抽象名词]立刻,马上:表示需要立即采取行动或完成某事。

He took off at once and headed back to the motel.
他立刻离开,回到汽车旅馆。

at once 出现在下面的课文中
Lesson 099&100 Ow! at once 副词: 立即
Lesson 105&106 Full of mistakes
Lesson 19 Sold out
Lesson 41 Do you call that a hat?
Lesson 43 Over the South Pole
Lesson 65 Jumbo versus the police
单词造句: