2. You do, but not pineapples or celery. They have coarse fiber. 是阿,但别吃凤梨和芹菜,他们有粗糙的纤维。
3. Out of the xylem, there is lot of fiber and the tannin crystal distributes around the air cavity. 叶脉中厚壁组织发达,木质部外纤维数量众多,在气腔周围有单宁结晶分布。
英英解释
n.
1. a slender and greatly elongated solid substance
2. the inherent complex of attributes that determine a persons moral and ethical actions and reactions
3. a leatherlike material made by compressing layers of paper or cloth