We need complete this project covertly.

我们要悄悄地完成这个项目。

The revolt has been started covertly.

起义已经秘密开展了。

Human trafficking is illegally and covertly started.

人口贩卖是隐秘且非法开展的。

They covertly observed Lauren, who was sitting between Ned and Algie at a nearby table.

他们秘密地观察着邻近桌子上坐在内德和阿尔吉之间的罗伦。

She watched him covertly in the mirror.

她从镜子里偷偷地望着他。

I looked out to the kitchen covertly.

我偷偷地向厨房望了一眼。

Grass, covertly projecting from the earth, is tender and green.

小草偷偷地从土里钻出来，嫩嫩的，绿绿的。

It is a double-faced behavior to agree overtly but oppose covertly.

阳奉阴违是一种两面派行为。