英文釋義
any of various sulfur-containing, fibrous, acidic or basic proteins chiefly of epithelial cells and tissues that are relatively insoluble and resistant to degradation, form filaments which assemble into bundles to provide structural support, and are the primary component of hair, nails, horns, claws, hooves, quills, scales, feathers and the epidermal layer of skin
例句 Example
The tinier the powder, the higher the absorbability and less destruction to skin's keratin layer.
所以,外用珍珠粉是越細越好, 不僅提高瞭吸收率而且可避免對皮膚角質層造成損傷.