奥秘在于丝腺里的水分逐步流失，而蛋白质可以储存水分，蚕在吐丝前先溶解于水。
The answer lies in the silkworm's slowly decreasing the water content in its silk glands and in the proteins' ability to retain water, keeping the solution soluble up until it is spun.
奥秘在于丝腺里的水分逐步流失，而蛋白质可以储存水分，蚕在吐丝前先溶解于水。
The answer lies in the silkworm's slowly decreasing the water content in its silk glands and in the proteins' ability to retain water, keeping the solution soluble up until it is spun.
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