fleeting

1. ADJ Fleeting is used to describe something which lasts only for a very short time. 短暫的

The girls caught only a fleeting glimpse of the driver. 姑娘們衹是匆匆瞥了那個司機一眼。

2. fleetinglyADV 短暫地

A smile passed fleetingly across his face. 笑容從他的臉上一閃即逝。