既然你说到这事儿，她确实好像情绪不大对。

Now that you mention it , she did seem to be in a strange mood.

《牛津词典》

既然你安顿下来了，为什么不做些认真的研究呢？

Now you're settled, why don't you take up some serious study?

《柯林斯英汉双解大词典》

既然你谈到了种植水仙，那么其他有重要商业价值的花卉，如玫瑰，又怎么样呢？

Now you've talked about work on daffodils, what about other commercially important flowers, like roses?

《柯林斯英汉双解大词典》

My answer is, you can't change one but you can create a new one that is almost like the old one but different in a little bit.

既然你不能改变元组,你可以新建一个跟原来的元组,大体上一致但有细微差别的元组。

麻省理工公开课 - 计算机科学及编程导论课程节选

Since I say you can believe you're going to die, yet you can't picture it from the inside.

既然我说你可以相信人是会死的，但是你无法想象那种感受。

耶鲁公开课 - 死亡课程节选

So since that's the easiest scenario, you can probably be sure it's not going to be too frequently that you're just given the energy, right, that might be too easy.

所以既然那是最简单的情况，你可以确信只给你提供能量值的,这种情况不太可能发生太多，对，因为那太简单了。

麻省理工公开课 - 化学原理课程节选