a very short time 瞬间；转眼；一眨眼；一刹那 He was asleep in a twinkling. 他转瞬间就睡着了。
Oxford Collocations DictionaryTwinkling is used before these nouns:- eye
- light
Idioms
in the twinkling of an eye
very quickly 瞬息之间；转眼之间 Suddenly, in the twinkling of an eye, her whole life had been turned upside down. 突然，一眨眼的功夫，她的整个人生都被颠覆了。