Keratoprotein constitutes hair, nail, feather, silk and cobweb.
角质蛋白构成毛发、指甲、羽毛、蚕丝及
。


的;
状的Keratoprotein constitutes hair, nail, feather, silk and cobweb.
角质蛋白构成毛发、指甲、羽毛、蚕丝及
。
IT WAS the mangroves he noticed first, reduced to cobwebbed wraiths as far as the eye could see.
红树林,退化成纵横交织地哀鸿遍野,
他最先注意到的事情。
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