烟雾使所有中国城市消失在卫星图片中。

Smog has caused entire Chinese cities to disappear from satellite photographs.

youdao

但是，同几乎所有中国城市一样，兰州因重度污染问题以及来自冶炼厂的烟雾遮盖了曾经清朗湛蓝的天空而饱受痛苦。

However, as with almost all Chinese cities, Lanzhou suffers from heavy pollution problems and smoke from the refineries obscure what would have been a clear blue sky.

youdao

但是，同几乎所有中国城市一样，兰州因重度污染问题以及来自冶炼厂的烟雾遮盖了曾经清朗湛蓝的天空而饱受痛苦。

However as with almost all Chinese cities Lanzhou suffers from heavy pollution problems and smoke from the refineries obscure what would have been a clear blue sky.

youdao