Nor were there then, or are there now, any nearby mountainranges from which to view them.
无论是过去还是现在，附近都没有山脉可以观看它们。
2
Trade was the mainstay of the urban economy in the Middle East, as caravans negotiated the surrounding desert, restricted only by access to water and by mountainranges.
因为商队只能通过水路和山脉进入沙漠，贸易就成为了中东城市的主要经济支柱。
3
The dry mountainranges of the western United States contain rocks dating back 440 to 510 million years, to the Ordovician period, and teeming with evidence of tropical marine life.