at once
/æt wʌns/ 11noun [抽象名词]立刻，马上：表示需要立即采取行动或完成某事。
- The place at once enraptured me.
- 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 5 The facts
