emission各種形式：emissional emit
例句
1、
The emission of gases such as carbon dioxide should be stabilised at their present level
二氧化碳等氣體的排放應該穩定在當前水平。
2、
The availability of new passenger cars each year depends on whether car makers successfully complete an emission certification process.
每年新車是否可用，取決於汽車製造者是否成功地完成排放物鑑定程序。
3、
This emission of heat is completely independent of temperature and pressure.
這熱的散發全然不受溫度和壓力的影響。
