<正>词数:496阅读难度:★★★☆☆建议阅读时间:5分钟Traditional Chinese medicine needs to prove its worth through rigorous clinical trials,according to the head of one of China's largest herbal remedy companies,as a contentious new law to boost the $40bn sector comes into effect.Traditional Chinese medicine is estimated by analysts to account for a third of sales in China's$117bn pharmaceutical market,the