苔藓柔软，摸起来像绒毛。The moss was soft and furry to the touch.蕨类植物、苔藓和真菌通过孢子传播蔓生。Ferns, mosses and fungi spread by means of spores.苔藓生在石头上.Moss grows on a rock....
N - acetylcysteine a precursor of glutathione in cells, is a thiol antioxidant.乙酰半胱氨酸是细胞内还原性谷胱甘肽的前体, 是一种含有巯基的抗氧化剂.Thus, glutathione provides important protection against many environmental hazards.谷胱甘肽因而对许多环境有害物提供了重要的保障....
The widow must live on her slender pittance.那寡妇只能靠自己微薄的收入过活.A buxom widow must be either married,buried or shut up in a convent.寡妇门前是非多。A buxom widow must be either married , buried or shut up in a convent.寡妇门前是非多.The wi...