bleached roughage的用法和样例：
例句
- In this paper an investigation is made on the roughage resources and hebivorous livestock distribution in Hebei province.
对河北省粗饲料资源和草食家畜的分布进行了调查研究。 - Through the investigation and study on production and supply capability of roughage in Daqing city, main effect factors of supply and utilization of roughage were determined.
摘要通过调查和研究，分析了大庆市粗饲料的生产和供应能力，确定了影响大庆市粗饲料供应与利用的主要影响因素。
