大坝一定要在雨季开始以前合拢，否则就会前功尽弃。

The dam must be closed before the rainy season sets in, or all our Labour will be lost.

《新英汉大辞典》

在我们开始以前……

Before we begin…

youdao

在表开始以前，这会在页眉以下给我们留出一个小空间。

This leaves us a little room below the header before the table begins.

youdao

His harmonious unity with nature is broken, he clothes himself and his old friends the gazelles run from him now He will never again roam free with the animals. He cannot run as quickly. His pace slackens, he can't even keep up with them.

他与自然的和谐被破坏，他开始穿上了外衣,以前的朋友羚羊，离他而去,他不再和动物一起，四处游荡,行动变得迟缓，再也无法赶上羚羊。

耶鲁公开课 - 旧约导论课程节选

History lesson now. Years and years ago,

历史课开始了。很久很久以前，

政府和皇室的作用 - SpeakingMax英语口语达人

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选