Momentous emergency events 重大公共突发事件
But it has also witnessed two momentous events.
它也见证了两项重大事件。
It is a rich chronicle of momentous events and the people that played their part in them.
它是一部记载重大事件及参与其中的相关人物的内容丰富的编年史书。
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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