燧石在压力的作用下碎成了小块。Under the pressure, the flint crumbled into fragments.这里的岩石像燧石一样坚硬.The rock here was as hard as flint.这一岩层中有大量燧石.This layer of rock contains a lot of flint....
Creative people are usually very determined and thrive on overcoming obstacles.富有创造力的人一般都意志非常坚定,能不断克服困难,事业蒸蒸日上。Only by overcoming our weaknesses can we advance without any encumbrance; only by uniting ourselves in our st...
高熔体强度聚丙烯 ( HMSPP ) 是聚丙烯的一种重要改性产品,具有广泛的用途.High melt strength polypropylene ( HMSPP ) is an important product of polypropylene modification with wide application....
Sori borne near the costule, indusium spherical, membranous.孢子囊群靠近中脉著生;囊群盖球形, 膜质.Thellos thellon , membranous layer of life is our only home.薄薄的膜层就是咱们独一的家园.Others are born live , after struggling to break free from a mem...