1.秘密地,偷偷地
1.done secretly, especially because you know you should not be doing it
1.Grand as the watch was, he sometimes looked at it on the sly on account of the old leather strap that he used in place of a chain.
尽管这只表华丽珍贵，因为用的是旧皮带取代表链，他有时只偷偷地瞥上一眼。
2.I look up and have a look the teacher, but the teacher on the sly nods his head at me.
我抬头看看老师，老师却在会意的朝我点头。
3.Perhaps she scribbled some pages up in an apple loft on the sly, but was careful to hide them or set fire to them.
或许她曾躲在放苹果的阁楼上，偷偷地写过点东西，但却小心地藏了起来，或者早已付之一炬。
4.Once he was so hungry, Ivan went to the KFC restaurant on the sly. When Ivan started to eat, he found Alice standing ahead of him.
有一次，他太饿了，就偷偷地跑到肯德基餐厅，刚准备吃，就发现爱丽丝站在面前。
5.I'd rather have ham on rye. Meow. And she had a frog on the sly. Neigh. And she did it on one try.
我宁愿吃火腿黑麦面包。喵。她还偷偷地吞了一只青蛙。嘶。而且她一次就吞下了。
6.Albert enjoys privacy and he tends to do things on the sly.
亚伯特注重隐私，做事总是很神秘。
7.Jack has got a great bargain. He even picks up the old Toyota of Mr. Lee's on the sly.
杰克这回捡个大便宜，他还顺手牵羊接收了李先生那辆旧丰田轿车。
8.I liked looking at her on the sly, when she was sitting at her little table.
她经常坐在自己的桌旁，这时我就喜欢偷偷地看她。
9.When she thought no one was looking she opened the cupboard and took a few sweets on the sly.
当她觉得没人看见时，她打开壁橱偷偷拿了几块糖。
10.But could police and social workers really know if they were visiting their nephews or accessing child pornography on the sly?
但如果他们去拜访侄子或偷偷的接触儿童色情，警察和社会工作者真的能发现吗？