偷偷摸摸

tōu tōu mō mō dào chù luàn pǎo

偷偷摸摸到处乱跑

run around surreptitiously

zhè bù shì tōu tōu mō mō de shì qing

这不是偷偷摸摸的事情。

This is not a matter that needs to be kept hidden.

nà gè nán hái yī zhí zài tōu tōu mō mō cháo wǒ kàn

那个男孩一直在偷偷摸摸朝我看。

That boy kept stealing furtive glances at me.

tā kàn qǐ lai tōu tōu mō mō guǐ guǐ suì suì de

他看起来偷偷摸摸，鬼鬼祟祟的。

He looked sly and furtive.