for/in a split second

for/in a split second

释义：“电光火石”，在留学文书里这个短语可以作为一个非常生动的开始句子的方式。用for的话，更强调一种持续一小段时间并随后恢复正常的异变。用in的话，变化或者主人翁的顿悟往往是永久性的。

例句：
His eyes widened for a split second before Dennis slumped.
In a split second, Francsico jumps over the barrier to protect his little brother.

同义词：in the twinkling of an eye