名词中文翻译
中文翻译：气体证书
同义词：
['gas permit', 'gas license']
例句：
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1.The company needs to obtain a gas certificate before it can operate in the new area.
该公司在进入新区域之前需要获得一个气体证书。
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2. Gas certificates are required for all domestic vehicles that use natural gas.
所有使用天然气的家用车辆都需要气体证书。
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3.The gas certificate is valid for one year from the date of issue.
气体证书从签发之日起有效期为一年。