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- The sly thief was caught on the spot, to everyone's satisfaction. 那个狡猾的小偷当场就擒，真是大快人心。
- 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。
- Many people attended the meeting on the sly. 许多人秘密地参加了会议。
- She must have been having lessons on the sly. 她准是暗地里一直在上课。
- He has to visit them on the sly. 他只得偷偷地去看望他们。
- Why need she have been having lessons on the sly? 为什么她需要暗地里一直在上课?
- Watch the children playing catch on the beach. 观看儿童们在海滩上玩接球。
- Henry Fox got married on the sly. 亨利·福克斯已偷偷结婚了
- Being a foreigner, he did not catch on the joke. 他是个外国人, 未能理解这个笑话的含意。
- Read it, if at all, on the sly, to look for their names. (要看的话就偷偷地看，去找一找他们的名字。)
- The fish was far and away the biggest ever caught on the lake. 这条鱼是在这个湖里所捕到的鱼中最大的一条。
- She often writes to Peter on the sly. 她经常秘密地给彼得写信。
- Now they wouldn't have to socialize on the sly. 现在他们不必偷偷摸摸地进行社交交往了。
- She's always eating cookies on the sly. 她经常偷偷吃甜饼。
- Who need have been having lessons on the sly? 谁需要暗地里一直在上课?
- Must she have been having lessons on the sly? 她准是暗地里一直在上课吗?
- He's always the last to catch on. 他总是最后一个弄明白。
- She mustn't have been having lessons on the sly. 她准是暗地里一直在上课.
- The catch on my handbag is broken. 我的手提包的扣坏了。
- She picked up the new nylon umbrella on the sly. 她顺手牵羊拿走了那顶新尼龙
