从屠宰后动物胴体上剥下的、未经鞣制成革的皮。供制革和毛皮用的生皮，通常又称原料皮。有使用价值的原料皮多为哺乳动物皮。
他和其他人还指出，晒太阳会通过破坏深层胶原纤维和产生皮肤松垂与皱纹加速衰老过程。
He and others also pointed out that sun exposure hastens the aging process, by damaging deeper collagen fibers and creating sagging and wrinkles.
Hanson发明了一种仿生皮肤材料“frubber”，令机器的头部足以以假乱真。
Hanson developed a biologically inspired skin material, "frubber," that makes his robot heads appear uncannily lifelike.
“研究表明我们必须在非洲为非洲人做更多的研究，”乌干达医生皮特·奥鲁普特-奥鲁普特说。
"It shows we need to do more research in Africa for Africans," says Peter Oluput-Oluput, a Ugandan doctor.
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