silkworm cocoon

• 蚕茧

silkworm cocoon的用法和样例：

例句

1. A cocoon is a kind of silk covering made by an insect.
   蚕茧是由昆虫制造的一种由丝组成的外包层。
2. The conventional cocoon drying methods are also suitable for male cocoons.
   对于雄蚕茧，常规的烘茧工艺可以达到烘茧的要求。