Natural gas is a clean energy source with increasing demand in the worldwide.
天然气作为一种清洁环保的能源，需求量越来越大。
The development and use of natural gas as a clean energy source will soon become a reality in China.
我国开发利用清洁能源天然气的时代即将来临。
The development and use of natural gas as a clean energy source will soon become a reality in China.
我国开发利用清洁能源天然气的时代即将来临。
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