yǎng cán rén / bǎ / shú cán / fàng dào / cán cù / shàng / tā men / biàn / kāi shǐ / jié jiǎn养蚕人把熟蚕放到蚕簇上,它们便开始结茧。The silkworm farmer places the mature silkworms on the cocooning frame, and they begin to spin cocoons.