NASA recently released a stunning image showing the surface of Mars in extraordinary detail, including a myriad of shapes and textures seen as carbon dioxide or water frost, the Daily Mail reported.
据英国《每日邮报》报道，美国宇航局近日公布了一张火星冬季的照片，展现了火星表面无数令人惊叹的地貌特征和结构，其中包括二氧化碳或者水形成的霜。
In pig slaughter electrical stunning is commonly used (carbon dioxide gas is an option).
电击是生猪屠宰中常用的手段(二氧化碳气体也是一种选择)。
应用推荐