in a split second
在一瞬間;瞬間之間
口語·描述極短時間
英文釋義
very quickly or immediately
例句
He made the decision in a split second and jumped out of the way.
典故來源
源自'split'表示分裂,比喻時間短到幾乎無法分割,形容極快的瞬間。