The proximity of NGC 3603 makes it an excellent lab for studying such distant and momentous events.

NGC3603的近邻为研究这样遥远和重大的事件创造了一个杰出的实验室。

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The choice of the name Kepler is timely, for 2009 is the 400th anniversary of two of the most momentous events in astronomy.

2009年是天文学历史上最重要的两大事件400年的周年纪念，选定“开普勒”做望远镜的名字也是应景之作。

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It's clear that momentous events are afoot; there are all kinds of conflicting rumours and theories, but nobody knows how things will pan out.

很明显，重大的事件都在发生在进行，有相互冲突的各种谣言和理论，但没有人知道事情最终会怎么收场。

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His taking the new job was one of the most momentous events of the entire 20th Century.

FORBES: Connect

Some commentators on Mr Thom's work question whether the momentous events of history can really be called catastrophes, using the word in the sense that they were totally unexpected interruptions of an ordered existence.

ECONOMIST: René Thom

Yet the momentous events of the century also kept intruding, among them the European revolutions of 1848, the Crimean war, the Indian Mutiny and the American civil war, this last causing such a boom in cotton prices that Egypt's rulers binged the country into ruin.

ECONOMIST: The Suez Canal