It did not have enough soldiers to stop any real attempt by Confederate forces to seize the city.

VOA: special.2009.08.20

And, in fact, you should stop noticing it after it's been in the environment for long enough.

事实上，如果它在环境中出现的时间足够长久的话,你就不该再去一直注意它了。

耶鲁公开课 - 心理学导论课程节选

If it's important enough for you to retain I'll stop and pause on it in class and discuss it in enough detail so you'll be able to learn it.

如果真的很重要到需要你们记住,我会在课堂上进行详细地讲解,这样你们就能掌握了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

like many Rwandans, blames the international community for not doing enough to stop the genocide.

VOA: standard.2009.04.08

Hal tries to stop Dave, understandably enough.

它试图阻止戴夫,这一点完全可以理解

耶鲁公开课 - 死亡课程节选

Today,the number is still 40 percent. Part of the problem is that a number of big importers, such as China and Japan, are not doing enough to stop the import and sale of illegal timber.

VOA: standard.2010.07.28