During periods when commodity prices were high, the rate of westward migration increased spectacularly.

在商品价格较高的时期，西迁的速度大幅增长。

"Old America seemed to be breaking up and moving westward," observed an English visitor in 1817, during the first great wave of migration.

1817年，在第一次移民大潮中，一位英国游客观察到：“古老的美洲似乎正在分裂并向西移动。”

Therefore, these social traits helped to produce the nomadic and daring settlers who kept pushing westward beyond the fringes of settlement.

因此，这些社会特征有利于造就流浪在外并且大胆的移民，这些移民会一直向西迁移到比定居点更遥远的地方。

In one now-standard text, Faragher demonstrated the persistence of the "cult of true womanhood" and the illusionary quality of change on the westward journey.

在一篇如今已成为标准的文章中，法拉格展示了“对真正女性气质的崇拜”的坚持，以及大话西游中变化的虚幻性。

Over the short term, we can predict that the Americas will continue to move westward, farther away from Europe, while Africa and Australia will continue to move northward.

我们可以预测，在短期内，美洲将继续向西移动、远离欧洲大陆，而非洲和澳大利亚板块将继续向北移动。

Demand for this exotic fabric eventually created the lucrative trade route now known as the Silk Road, taking silk westward and bringing gold, silver and wool to the East.

对这种具有异国情调的面料的需求最终创造了有利可图的贸易路线，即现在所说的丝绸之路，这条路线把丝绸带向西方，把金、银和羊毛带到东方。

Because most existing species live in Australia, early researchers concluded that Varanus originated in Australia and subsequently island hopped westward along the Indo-Australian archipelago.

由于现存的大多数物种生活在澳大利亚，早期的研究人员得出结论，巨蜥属起源于澳大利亚，随后沿着印澳群岛向西跳跃。

It had been assumed that the ice extended westward from the Alaskan/Canadian mountains to the very edge of the continental shelf, the flat, submerged part of the continent that extends into the ocean.

人们过去曾猜测，冰山从阿拉斯加和加拿大山脉向西延伸到大陆架的最边缘，也就是大陆架扁平的、延伸到海洋中的水下大陆那部分。

He sailed westward from Palos de la Frontera.

他从帕洛斯·德拉·弗龙特拉港出发向西航行。

Wind and waves keep pushing him westward when he wants to go south toward the Solomon lslands.

当他想向南前往所罗门群岛时，风浪不断将他推向西边。

Some geologists believe that the Americas will continue to move westward and eventually merge with East Asia.

一些地质学家认为，美洲将继续向西移动，最终与东亚合并。

Researchers are projecting a westward expansion of " Cactoblastis cactorum" in North America.

研究人员计划在北美向西扩展“仙人掌螟疫病菌”。

For decades Americans have followed the sun westward.

数十年来，美国人追随着西边的太阳。

As you travel westward, does the elevation get higher?

当你向西旅行时，海拔是不是逐渐变高了？

It is what led generations of pioneers to blaze a westward trail.

正是这种精神指引一代又一代先驱者开拓西进之路。

The journey took months and first brought him to Moscow, then westward.

这次的路程花费了几个月的时间，他先被带到了莫斯科然后再往西。

During the 1830s and '40s, the flood of pioneers poured unceasingly westward.

在19世纪30年代和40年代，大批拓荒者不断涌入西部。

It is proposed that the drift of the continents was vectored by westward forces.

大陆的漂移被认为是由向西的力造成的。

Like Tomas, Ului had been moving westward over an area of high sea surface temperatures.

如同热带气旋tomas, Ului也曾经在西移途中经过一片高海温区。

ThePortlandTrailblazers: During the 1800s, the United States expanded westward to the Pacific.

波特兰开拓者队美国在19世纪向西部太平洋沿岸扩展。

This storm was expected to continue moving westward before turning south and eventually weakening.

在向南转向和真正减弱之前，预计ului仍将继续西移。