来自戈壁和塔克拉玛干沙漠的沙尘常常在春季出现在美国西部，导致了韩国、日本和俄罗斯城市的灾难性的空气质量。
Dust from the Gobi and Taklimakan deserts is often present over the western United States in the spring and can lead to disastrous air quality in Korean, Japanese and Russian cities.
在美国西部和南部，巴士的速度已经开始有所减缓，这主要是由城市距离以及驾驶文化共同决定的。
Express bus service has been slower to catch on in the West and South, where the distance between cities is greater and the driving culture reigns.
蒂姆：洛杉矶，美国西部的一个港口城市。
对美国西部科罗拉多州普韦布洛市一项禁烟活动进行研究的人员称，在这个城市实行的禁烟法已经使得因为心脏病发作而住院的人减少了百分之40。
Researchers studying a smoking ban in the western U. S. state of Colorado say a no smoking law in one city led to a 40 percent decrease in the number of residents hospitalized for heart attacks.
一个曾经繁荣的城镇，尤指美国西部的一个新兴城市，现已完全被遗弃。
A once thriving town, especially a boomtown of the American West, that has been completely abandoned.
一个曾经繁荣的城镇，尤指美国西部的一个新兴城市，现已完全被遗弃。
A once thriving town, especially a boomtown of the American West, that has been completely abandoned.
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