All at once a terrific crash of thunder shook the whole house.
There were too many things happening all at once and I couldn’t take it all in.
There were too many things happening all at once – I couldn’t take it all in.
All of a sudden there was a knock at the door.
英语词典包含67175条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。