立刻，一瞬间，须臾之间，转瞬，转瞬之间...

in a flash的音标：in a flash的英式发音音标为：[in ə flæʃ]in a flash的美式发音音标为：[ɪn e flæʃ]...

The answer had come to him in a flash.他一下子就有了答案。Five years have elapsed in a flash.一晃就是5年.He drew his sword in a flash.他霍地拔出剑来....