昂科雷七座跨界车于2007年问世，现在已是别克系列中最老的车型，已到了更新换代的时候。
The Enclave seven passenger crossover, introduced in 2007, is now the oldest car in the Buick lineup and due for a makeover.
现有的公交车及其服务将更新换代，以方便市民乘车，改善候车环境。
Newer higher-quality buses will be put into use and services will be perfected, so that passengers will enjoy more convenient and comfortable conditions.
数千辆公交车正在升级换代，以使用更为清洁的燃料，另外加油站也在进行改造以减少汽油挥发。
Thousands of buses are being upgraded to burn cleaner fuels, and fueling stations are being modified to release less fuel gasoline into the air.
数千辆公交车正在升级换代，以使用更为清洁的燃料，另外加油站也在进行改造以减少汽油挥发。
Thousands of buses are being upgraded to burn cleaner fuels, and fueling stations are being modified to release less fuel gasoline into the air.
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