If the average lifetime for a civilization is short, the galaxy is likely to be unpopulated most of the time.
如果一个文明的平均寿命很短,银河系很可能在大部分时间里是无人居住的。
He transformed an unpopulated marshland on the river Neva into a majestic city of stone and marble, today inscribed on UNESCO%26Otilde; s World Heritage List.
Musk noted that if a return to launch site recovery is made, it would be done over an unpopulated area.
穆斯克指出,如果到发射点的回收被决定了,它将做了一个无人区。
The North American view is vast, with large Spaces of unpopulated land.
美国的观念是宏大的,与无人寓居的大片土地空间。
The vast basin of the Amazon River in northern South America. It remains largely unpopulated and undeveloped, especially in the interior.
亚马孙河流域南美洲北部宽广的亚马孙河盆地,大部分地区仍无人居住且尚未被开发,特别是其内陆地区。
The North American landscape is vast, with large Spaces of unpopulated territory.
北美景观是巨大的,大空间的美洲的领土。
Deep in the vast and mostly unpopulated Gobi Desert, China「s launch base is quietly awaiting the country」s first-ever manned space flight.
在辽阔无际人烟稀少的戈壁滩上,中国发射基地正默默等待着首次载人航天飞行时间的到来。
They followed the Black Hawks' initial flight path but landed at a predetermined point on a dry riverbed in a wide unpopulated valley in northwest Pakistan.