momentary

A momentary lapse in concentration caused the professional driver to crash on the final lap.

(Chinese) 瞬间的注意力分散导致这位职业赛车手在最后一圈发生了车祸。

The clouds parted to give us a momentary glimpse of the eclipse before the rain started.

(Chinese) 云层裂开，让我们在下雨前瞬间瞥见了一眼日食。