他显得偷偷摸摸，鬼鬼祟祟。

He looked sly and furtive.

窥读就是偷偷摸摸地读别人在读或者写的文字。这个词是仿照eavesdrop1（偷听）造出来的。Eavesdrop是用耳朵，而eavesread用的是眼睛。

Eavesread is to surreptitiously read the text that another person is reading or writing.

老师怀疑这个学生在考试时有偷偷摸摸的行为。

The teacher was suspicious of the student's furtive behaviour during the exam.

v.偷偷摸摸地走猫吃完食物就偷偷跑了。

sneak The cat ate the food and sneaked off.

当年，它还不是那么光鲜，游客们从特拉法加广场（Trafalgar Square）侧面一道阶梯走下来，偷偷摸摸地蹩进来。

In less glossy times, visitors would sneak into the crypt via a side staircase off Trafalgar Square.

周三，最新款iPhone将在这里一个能容纳7000人的礼堂里发布。然而届时可能会更像一个偷偷摸摸早就看过自己礼物的十岁孩子的圣诞节。

When the latest iPhone is unveiled here Wednesday in a 7000-seat auditorium, it probably will instead be more like Christmas for a sneaky 10-year-old who long ago peeked at his present.

在法国，吃圃鹀也是一种偷偷摸摸的享乐：作家兼大厨安东尼·伯尔顿（Anthony Bourdain）在2010年的著作《半熟》（Medium Raw）中描写法国大厨们半夜在纽约的一家餐厅秘密聚会，品尝圃鹀。

Eating ortolan is also a surreptitious pleasure beyond France: The author and chef Anthony Bourdain, in his 2010 book, "Medium Raw," described a secret, late-night meeting of French chefs in a New York restaurant to eat ortolans.

sneak:潜行，偷偷摸摸做elevator:电梯我就想办法把这个弄进电梯里。

While I try and sneak this into an elevator.-

现在，他们偷偷摸摸地活动在酒吧或夜总会了。

Now, they operate more discreetly from bars and clubs.