你会高兴于一段时间之前必须发生的事情，但只有现在才意识到。

You'll be glad of something that had to happen some time ago, but only now is it time to realize.

youdao

房主们长期饲养野生鸟类，但只有现在，科学家最终才明白这是如何影响城市生态系统的。

Homeowners have been feeding wild birds for a long time, but only now are scientists finally beginning to understand just how that affects urban ecosystems.

youdao

现在只有一场非常昂贵的手术才能救他，但没有人借钱给他们。

Only a very expensive operation could save him now and there was no one to lend them the money.

youdao

Now, on this screen is going to be instructions but I want to give the instructions to this half of the class.

现在，屏幕上将会显示出指导语,但我希望只有右边的同学看到这些指导语。

耶鲁公开课 - 心理学导论课程节选

And he actually did this in the late 1800's, back before even all of the elements that we know today were discovered, really only about 60% or so, 70% were discovered then that we now know today.

他最终在十九世纪晚期完成了这一壮举，难能可贵的是,虽然我们现在已经发现了所有的元素，但在当时已知的元素只有我们现在知道,百分之六七十，在这种情况下。

麻省理工公开课 - 化学原理课程节选

.. All right. Good. Now I want to hear - so there are some who think it's morally permissible but only about 20%, led by Marcus.

很好，我现在想听的是-,现在有人认为这行为是道德上允许的,但只有20%的人，以马库斯为代表。

耶鲁公开课 - 公正课程节选