Question

请教一句英语翻译，谢谢大家。

Now we’ve got a few minutes before we leave for today.

参考原文：
Now we’ve got a few minutes before we leave for today. So I’ll just touch on an interesting subject that I think makes an important point. We’ve been covering rocks and different types of rocks for the last several weeks. But next week we are going
to do something a bit different. And to get started I thought I’d mention something that shows how uh…as a geologist, you need to know about more than just rocks and the structure of solid matter, moving rocks, you may have heard about them. It’s quite a mystery. Death valley is this desert plane, a dry lake bed in California
surrounded by mountains and on the desert floor these huge rocks, some of them
hundreds of pounds. And they move. They leave long trails behind them, tracks
you might say as they move from one point to another. But nobody has been able
to figure out how they are moving because no one has ever seen it happen.

Answer 1

现在在我们今天动身前还有几分钟的时间。
leave for是动身的意思，可以+地点，也可以不用加。

Answer 2

满意答案不对，应该是我们今天在开始讲课前还有一些时间。。。。这是惯用语leave for 原为动身离开的意思，在此翻译为开讲前。

Answer 3

现在离明天还有几分钟。 leave for today应该可以直接翻成到达明天吧。

Answer 4

今天时间不多了，.....后面是一些对近期的总结和后面几周内容的介绍

好像教地质的老师说的这些？