But knowing what percentage this is of the total amount leaking from the well will not be possible until a tight seal is on the well.

VOA: standard.2010.06.14

So it's a useful way of not quite knowing in advance what you want to put in a string, but being able to create strings, phrases, sentences, dynamically.

这是一个很有用的方法，如果你之前不是很了解,在句子中要加入什么，但是这个方法可以,动态地创建字符串，短语，句子。

哈佛公开课 - 计算机科学课程节选

But you're not responsible for knowing specifically that it's 11 . 5 times greater.

但你们不需要记住它,具体是１１．５倍这么大。

麻省理工公开课 - 化学原理课程节选

Knowing what iambic pentameter is, is not a gift of birth, but rather something that comes through a little bit of practice, which means we have to work at it a little bit.

没有谁是生来就知道抑扬五音步格诗，是需要努力才能知道的，这说明我们必须在这个上面花点功夫。

耶鲁公开课 - 现代诗歌课程节选

But after that it'll be writing about whatever you want and sometimes people feel a little out to sea not knowing exactly what we're expecting, so those instructions that we send out will be helpful.

之后就不用了,只需要写想法就可以,有时候人们会有点不知所措,不清楚我们要的是什么,所以我们给出的说明是有帮助的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选