1. RESULTS and CONCLUSION Polysaccharide-iron complex may exist as a sheath structure, but the fine structure needs further investigating. 结果和结论多糖铁复合物可能以鞘状结构存在,其精细结构有待进一步深入。
2. "Pandas Superman" left arm seems sheath with silver metal hands of the "claws" usually hidden only when required to appear, "is a rather special way out. “熊猫超人”左手臂似带着银色的金属护套,两手的“爪子”平时隐藏,只在需要时才会出现,“会是一个比较特别的方式出来。”
n.
1. a protective covering for a knife or sword
2. an enveloping structure or covering enclosing an animal or plant organ or part
3. a dress suitable for formal occasions