on the sly

• adv. 秘密地

英英释义

Adverb:

1. in a furtive manner;

   "the soldiers were furtively crawling through the night"
   

例句

用作副词 (adv.)

1. Many people attended the meeting on the sly.
   许多人秘密地参加了会议。
2. They decided to leave the town secretly.
   他们决定秘密地离开这个城镇。

近反义词

【近义词】

• underground 地下的
• furtively 偷偷地