It would be a momentous event.

这将是意义重大的大事件。

youdao

"This is going to be a pretty momentous event," he said.

他说：“这将是一次颇具历史意义的会议。”

youdao

It is a momentous event, something we will tell our children's children about.

像这样重大的事件，日后一定会在我们的儿孙辈间传述。

youdao

Armstrong summed up the momentous event with one simple, elegant phrase: "That's one small step for man;

VOA: standard.2009.07.16

But before he can actually be made present at the actual event of the Nativity, he has to endure something painful and obviously momentous: "from out his secret Altar toucht with hallow'd fire."

但是要想真正能在,基督降生时出现，他不得不忍受一些痛苦，而且是巨大的痛苦：,“从神秘的祭坛外碰到圣火“

耶鲁公开课 - 弥尔顿课程节选

The birth of a child is a momentous event anywhere in the world.

WHITEHOUSE: Office of Science and Technology Policy Blog

The International Free Press Society has asked an array of legal experts, authors and journalists to reflect on this momentous event.

CENTERFORSECURITYPOLICY: Clare Lopez on the Geert Wilders Trial

This in itself would be a momentous event, marking the first time in Egypt that a reasonably free presidential election had been held, producing a head of state legitimised by the popular will, albeit in a polarised society.

ECONOMIST: The Arab spring