偷偷摸摸地、秘密地、悄悄地
in a furtive manner
同义词： furtively
... in the issue 结不美观 on the sly 奥秘地；偷偷地 3. A 参考译文：教育对成长中国家是必不成少的。 ...
... on the side作为兼职;另外 on the sly偷偷地;秘密地 on the spot当场,当即;在现场 ...
... on the side作为兼职；额外 on the sly偷偷地，冷不防地 on the spot当场，在现场 ...
... 偷偷的妈 chan 偷偷的,冷不防的 on the sly 偷偷的隐藏著自己 secretly hidden myself ...
偷偷地；秘密地
He has to visit them on the sly.
他只得偷偷地去看望他们。
Under the cover of the smog, He snatched the pot on the sly.
在烟雾的掩护下，他偷偷地拿走了那只壶。
Some boys smoke on the sly.
有些男孩子暗地吸烟。
So they tried to keep up appearances while indulging in a sensual life on the sly.
And there are also gifts she gives on the sly that, she says, not even her husband knows about.
All this work is legal, mind you, but it is usually done on the sly, often without the knowledge of the targeted company.