偷偷

tā xiǎo shí hou céng tōu tōu de chōu yān

他小时候曾偷偷地抽烟。

He used to smoke on the sly when he was a boy.

tā tōu tōu de gēn tā xiāng huì

她偷偷地跟他相会。

She met him on the sly.

tā tōu tōu lù zhì le tā men suǒ yǒu tán huà de lù yīn

她偷偷录制了他们所有谈话的录音。

She had secretly tape-recorded all their conversations.

tōu tōu piē yī yǎn

偷偷瞥一眼

steal a glance at

mā wǒ duō jiǔ méi yǒu shuō wǒ ài nǐ wǒ zhī dào nǐ yī dìng tōu tōu de kū qì

妈，我多久没有说我爱你，我知道你一定偷偷的哭泣。

Mom, how long haven't I said I love you? I know you must shed tears.

tōu tōu de zuò

偷偷地做

do something secretly

tōu tōu de tí shì

偷偷地提示

covertly prompt

tōu tōu de liū zǒu

偷偷地溜走

sneak away