北美大陆的地形严格限制了进攻通道。
The North American continent's geography severely limited the lines of attack.
当探险家们第一次踏上北美大陆时，天上和地上到处都是种类多得惊人的野生动物。
When the explorers first set foot upon the continent of North America, the skies and lands were alive with an astonishing variety of wildlife.
现在的北美大陆和欧洲大陆大约在40亿年前是连接在一起的，在那时，加勒多尼亚山脉与现代的喜马拉雅山脉一样雄伟。
About 400 million years ago, when the present-day continents of North America and Europe were joined, the Caledonian mountain chain was the same size as the modern Himalayas.
北美大陆分水岭沿黄石公园西南部斜着流过。
The Continental Divide of North America runs diagonally through the southwestern part of the park.
1492年之前，蚯蚓在北美大陆的数量为0。
此时此刻一支克隆远征军正在跨越欧洲和北美大陆。
One is marching across Europe and north America at this very moment.
但平均每年会有两到三个袭击北美大陆。
But in an average year, two or three will strike the mainland of North America.
地球的抖动对北美大陆有几个方面的影响。
The Earth wobble does several things to the N American continent.
地图描绘出北美大陆的地形以及它的山脉、河流和平原。
The map shows the configuration of the North American continent, with its mountains, rivers, and plains.
落基山脉是北美大陆的脊梁，也被成为大陆分水岭。 。
Thee Rockies, the backbone of the North American Continent, is also known as the Continental Divide.
美国和加拿大同处于北美大陆，又都曾经是英国的殖民地。
Both Canada and the United States are located in North American continent, and historically, they were former British colonies.
加拿大位于北美大陆的北部，东临大西洋，南与美国接壤。
Canada is in the north American and continent north east Atlantic, the South and the u.
如果北美大陆该地区预先就有诱发地震的应力，将很难评估该地区的地震风险。
If this area of the North American continent is preloaded with the stress that can lead to earthquakes, it will be difficult to assess earthquake risk in the region.
我们齐塔人在北美大陆有许多联系人，而北美大陆就是我们的区域。
We, the Zetas, have contactees within the N American continent, which is our region.
最早的定居者来到北美大陆建立殖民地是自由的控制存在于欧洲社会。
The earliest settlers came to the North American continent to establish colonies which were free from the controls that existed in European societies.
横扫北美大陆，震惊西方观众的电影《藏龙卧虎》就是个很好的例子。
The movie, Crouching Tige Hidden Dragon, is a good example. You know, it's been sweeping the continent of North America and shocked the western people.
北美大陆，以及所有其他大陆，看起来年复一年的待在同一个位置上。
North America, and all the other continents, seem to stay in the same locations year after year.
其余北美大陆的美国地区只有等到2014年3月15日再见证又一次完全的月全食。
The rest of the continental U.S. will have to wait until April 15, 2014 to witness a total lunar eclipse.
当然，由于北美大陆正承受着压力，呈对角线地被拖拽，脆弱的岩洞会破裂。
Of course fragile caverns will fracture as the N American continent is put under stress, pulled at a diagonal.
最后一次在北美大陆上对象牙嘴啄木鸟无争议的观测是在1944年的美国路易斯安那州。
The last undisputed report of an ivory-billed woodpecker in continental North America was in Louisiana in 1944.
在北美大陆及欧洲的梦想中，曾经拥有一个非常部落类型的、更基于统一的梦想。
The dreams of the North American continent and Europe as well once held a very tribal type of dream that was more unity based.
在大西洋裂谷分离的时候，北美大陆与裂谷以西的部分带动加拿大一起向北移动。
Canada move north, while the rest of the Americas cling to the Atlantic Rift while it separates.
北美晚古生代钾盐大规模集中成矿作用，也与该时期北美大陆古赤道位置密切相关。
The extensive deposition of potash salts in North America in Paleozoic Era was associated closely with the position of paleoequator.
最早的定居者来到北美大陆建立殖民地，其中来自欧洲的控制，在社会中存在的自由。
The earliest settlers came to the North American continent to establish colonies which were free from the controls that existed in European societies.
最早的定居者来到北美大陆建立殖民地，其中来自欧洲的控制，在社会中存在的自由。
The earliest settlers came to the North American continent to establish colonies which were free from the controls that existed in European societies.
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