furtively
adv. 偷偷地；暗中地
近义词：underground，secretively，stealthily，secretly，slyly，surreptitiously，onthesly，
英英释义
Adverb
- in a furtive manner;
"the soldiers were furtively crawling through the night"
例句
用作副词(adv.)
- A slouchy figure crossed the opposite corner and glanced furtively in his direction.一个无精打采的人走过对面的拐角，偷偷地朝他这个方向看着。