cellulose
n[U]
1 organic substance that forms the main part of all plants and trees and is used in making plastics, paper, etc 纤维素(构成植物主要组成部分的有机化合物, 用以制造塑料、 纸等).
2 any of various compounds of this used in making paint or lacquer 纤维素的衍生物(用以制造颜料或油漆).
No, just a few. For example, most Canadians say news [nju:z], but Americans say [nu:z]. We mainly use American words, but we use quite a lot of British words too. We fill our cars with gas, which is American, but we turn on the tap which is British En