China was the first country in the world to cultivate silkworms and develop silk weaving. More than 3,000 years ago, sericulture and silk weaving were already significantly developed.
《新英汉大辞典》
2
宋代是我国历史上蚕桑业较为发达的时期。
Song Dynasty was a much more flourishing period for sericulture in history.
3
蚕桑生态系统是我国农业生态系统的重要组成部分。
Mulberry-silkworm ecosystem is one of the important agro-ecosystems in China.