汉译英~~

1，the reserve of petroleum is dwindling, while that of natural gas is comparatively rich.
2,to reduce the air pollution made by the tail gas of vehicles.

1.lack of petroleum resource but rich in nature gas

2.to reduce the enviroment pollution from the vehicle

The petroleum resources are becoming scarce day by day, while the natural gas reserve is relatively rich.

to reduce the auto-exhaust's pollution to the environment

3好

1. petroleum resources are decreasing day by day, while natural gas reserves are still abundant.
2.reduce the exhaust pollution of motor vehicle

1 The shortage of petroleum resource become more and more serious day after day,while the reserve of natural gas is comperatively rich.
2 To reduce the auto-exhaust's pollution to the environment!