您要查找的是不是：
- He's been drinking whiskey on the sly for thirty years. 他暗中偷喝威士忌酒已有三十年了。
- He wore a mask so that no one should recognize him. 他戴了一个面罩，使别人认不出他来。
- Don't trust him, he is a sly old fox. 别相信他，他像老狐狸一样狡猾。
- Many people attended the meeting on the sly. 许多人秘密地参加了会议。
- He was lurking slyly in the background. 他狡猾地躲在背後活动。
- That sly girl managed to get her friend's job. 那个诡诈的女孩设法取得她朋友的工作。
- Sham is sham and the mask must be stripped off. 假的就是假的，伪装应当剥去。
- They exchanged sly looks and smiles. 他们交换会意的眼色和微笑。
- He tried to mask his disappointment with a smile. 他试图以微笑来掩饰他的失望。
- The mask fitted tightly over his face. 他用面具把脸蒙得严严的。
- She must have been having lessons on the sly. 她准是暗地里一直在上课。
- They did so under the mask of charity. 他们是打着慈善的幌子这么做的。
- slyly mask 狡猾地伪装
- Such feelings tend to remain submerge beneath a mask of social politeness. 在社交礼貌的掩盖下，这样的情感往往不会显露出来。
- A slow sly smile was creeping around the corners of his mouth. 他的嘴角慢慢露出了诡异的微笑。
- She is having an affair with her Japanese teacher on the sly. 她和她的日文老师偷偷有了恋情。
- Her sociable manner is really a mask for a very shy nature. 她那好交际的作风，实际上是她腼腆天性的伪装。
- The sly cat stole the meat while the cook's back was turned. 淘气的猫趁厨师转身之机偷吃了肉。
- For a moment his mask of benevolence fell and the real man was revealed. 一刹那间，他慈善的假面扔掉，露出了他的真面目。
- A base, ungenerous wretch who under the mask of friendship has undone me. 有个卑鄙、吝啬的家伙打着友谊的幌子把我毁了。
