sindexsericin./ser-uh-sin/US // ˈsɛr ə sɪn //UK // (ˈsɛrɪsɪn) //血清素,血清蛋白,丝氨酸酶,丝氨酸Definitionsn.noun · 名词1.›a gelatinous organic compound that holds the two strands of natural silk together.Level 4More words in s →