“吐丝”的英语？

这些蚕的吐丝量很大.The silkworms are producing well.介绍了吐丝机固有频率的电算方法.The computing method for natural frequency of feeding machine is introduced.蚕吐丝, 蜂酿蜜. 人不学, 不如物.Silkworm silk, bee honey. People do not, not as objects....