Since the northeast region of North American is interconnected by many streams and waterways, water transportation by vessels like a canoe was most essential.
由于北美东北部地区由许多溪流和水路相连，所以通过像独木舟这样的船只进行水上运输是最重要的。
2
In North and Northeast China widely developed mantle-derived peridotite xenoliths, which were carried to the surface by alkali basaltic magma.
研究由玄武岩岩浆携带到地表的幔源橄榄岩包体可以获得上地幔的许多信息。
3
The site is a 400sqm with a steep drop of 2.5 meters from northeast to the southwest. It is flanked by roads on the north and western edges.