There is a long time for the protection of animal welfare in international community, But only recent years have seen the barriers to animal welfare with dual masks both morally and technologically.

• 对于动物福利的保护在国际社会上由来以久，但是兼具道德壁垒和技术性贸易壁垒“双重面具”的动物福利壁垒却是最近几年才出现的。