"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。”

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The Kremlin's goal is not just to control two cities in eastern Ukraine, but to stop all of Ukraine from moving westward.

克里姆林宫的目标不只是控制乌克兰东部的两座城市，二是阻止整个乌克兰走向西方。

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The volcanoes are strung across several thousand kilometres of ocean floor and are moving westward on the Pacific tectonic plate at up to 6cm per year.

BBC: Undersea mountains march into the abyss

The fast-moving wildfire about 90 miles east of Los Angeles broke out just after noon and was moving westward through largely undeveloped foothills of the San Bernardino Mountains, but it was dangerously close to subdivisions to the south, in Banning.

NPR: Wind-Fueled Wildfire Erupts East Of Los Angeles