在内战之前，学校采用了两个日程表中的一个，而那两个日程表上都没有暑假。

Before the Civil War, schools operated on one of two calendars, neither of which included a summer vacation.

youdao

而那些之前将大笔资金投入贵金属的人在去银行的路上则一直都在笑。

And those who previously poured money into the precious metal are laughing all the way to the bank.

youdao

就在几个月之前，他被诊断出有白血病，而那种疾病似乎企图用一种及其迅速和残忍的方式夺走他的生命。

Just months before, he'd been diagnosed with Leukemia, a thing that seemed intent on doing what it came to do in a quick and merciless manner.

youdao

I have no idea what's here at the moment so I'm just going to draw a question mark because that memory might have been used previously for some other purpose, but we know it's currently available to us so we have four bytes of memory.

我不知道在此刻这里是什么,所以我画一个问号，因为那块内存可能在之前,为其它的目的而使用过，但是我们知道它可以为我们所使用,这样我们就有4个字节的内存。

哈佛公开课 - 计算机科学课程节选

The mathematical theory of probability was unknown until that time and you can see that insurance suddenly made an appearance at that time.

在那之前,概率的数学理论,是不存在的,而随着概率论的出现,保险业也突然出现了

耶鲁公开课 - 金融市场课程节选