吃透英语课本，提升在校竞争力
n. 蚕；桑蚕
An epidemic of several silkworm diseases caused production to fall, especially in France, where the industry never recovered.
而几种桑蚕疾病的流行导致了丝绸产品下滑，特别在法国，丝绸工业再也没有恢复。
The first silkworm diseases began to appear in 1845, creating an epidemic.
1845年，首批桑蚕疾病开始出现，并引起了一次流行。
The silkworm spins silk.
蚕会吐丝。
silkworm pupa
蚕蛹
silkworm moth
蚕蛾
silkworm chrysalis
