美 [slɪp ɪn]
悄悄加入：在没有警告或不明显的方式下，特指将某事物包含进去。
悄悄进入：悄悄地进入一个地方而不被注意到。
... sneak in 偷偷溜入 inclose 围住 slip in 悄悄进去 ...
... buy it : 放弃，认输 slip in : 溜进 on purpose : 故意 ...
I managed to slip in a few jokes.
我设法穿插了几个笑话。
It was his fourth pink slip in two years.
这是他在两年内收到的第四份解雇通知书。
In places like Bali and New Guinea, people tend to slip in and out of sleep as they need it, napping more during the day, and getting up more at night.
在有些地方，例如巴厘岛和新几内亚，人们喜欢随时根据需要进入睡眠和醒来，白天时不时的打个盹儿，晚上却经常的爬起来不睡觉。
Unidentified Obama administration officials on Wednesday were quoted as anticipating that negotiations on a final bill would not be complete until after the president's State of the Union Address in January, and could slip into February.
VOA : standard.2009.12.24
This is the place where people typically slip up in debugging. They don't think in advance what they expect the result to be.
实验就推翻了你的假设了,人们在做调试的时候往往忽略了这一点,他们做实验之前并没有想想。
计算机科学及编程导论课程节选 : 麻省理工公开课
If you knew your way around in the funhouse like your own bedroom, you could wait until a girl came along and then slip away without ever getting caught, even if her boyfriend was right with her.
如果你在开心馆中跟自己在寝室里一样熟悉门道，你可以等一个姑娘前来，事后溜之大吉,绝不会被人抓住，即使她男朋友就在旁边。
1945年后的美国小说课程节选 : 耶鲁公开课
There are different kinds of faults. In this case,the damage was caused by movement of a "strike-slip fault."
VOA : standard.2010.01.13
More than two months after inconclusive national elections, Sunnis are once again watching their chances of major representation in parliament appear to slip away.
VOA : standard.2010.05.10
The slip in regular trading was sparked by an analyst downgrade from Morgan Keegan.
Nor will Kings' characters slip in plugs for the show's main sponsor, insurance giant Liberty Mutual.
The transitions are seamless and Michael Fagin's handsome sets slip in and out without fuss.