假定他还活着，现在有多大年纪了？

Assuming (that) he's still alive, how old would he be now?

《牛津词典》

现在有可以把橄榄装进罐里的机器。

Machines now exist to pack olives in jars.

《柯林斯英汉双解大词典》

这所建筑物现在有鸟儿栖息。

The building is now inhabited by birds.

《牛津词典》

So now we have a relationship between the ratios of these volumes that are reached during these adiabatic paths.

现在我们有了一个联系,这些绝热过程中,体积比的关系式。

麻省理工公开课 - 热力学与动力学课程节选

And there just happens to be a major here which is a kind of an intersection of all those things.

现在有一门专业能够将这3门专业结合在一起。

我的梦想是百万富翁 - SpeakingMax英语口语达人

So, if we hybridize just these three orbitals, what we're going to end up with is our s p 2 hybrid orbitals.

我们会看到现在有3个未配对的电子，可以成键。

麻省理工公开课 - 化学原理课程节选