emission造句
the
emission of carbon dioxide into the atmosphere
向大气排放二氧化碳
The
emission of gases such as carbon dioxide should be stabilised at their present level.
二氧化碳等气体的排放应该稳定在当前水平。
States have the option of adopting the even tougher California
emission standards.
各州也可以任意选择,是否采用加利福尼亚州更严格的排污标准.