although developed slowly
It originated from USA in 1930’s and was introduced into China at the end of 20 century, although developed slowly. The system of liability insurance for directors still obtains to this day in China.
基于1个网页-相关网页
although developed slowly
虽然发展缓慢
以上为机器翻译结果，长、整句建议使用 人工翻译 。