before you could say Jack Robinson

• 一下子

before you could say Jack Robinson的用法和样例：

例句

1. I can't say offhand how much money I earn.
   我一下子说不上来我挣多少钱。
2. He could not shake it immediately.
   他不能一下子摆脱掉。
3. You changed into a costume in the blink of an eye.
   一眨眼工夫连衣服都换好了。
4. Affinity casts three spells before blinking, and the Goblin decks often do likewise.
   共鸣连眨眼工夫都用不上，一回合就能出来三个咒语，精灵也类似。
5. You look not well,you'd better go to see a doctor.
   你脸色不太好，最好马上去看一下医生。
6. Right off the bat you should have put two and two together.
   你本应该马上作出合理推论的。

词汇搭配

• before you could say Jack Robinson 一下子