Ru is comprised of bioactive protein and polypeptide which is extracted from colostrum.乳珍是从母牛的初乳中提炼的生物活性蛋白及多肽.Starfish contains different types of bioactive materials, such as proteins, enzymes, steroidal glycosides , ga...
由于幼虫对药物有免疫力，因此必须经常喷药。Because of the immunity of the immature insects, it'simportant to spray regularly.成人往往对风疹有免疫力。Adults are often immune to German measles.新来的人对这一疾病在当地的几种类型缺乏免疫力.The newcomers lacked immunity again...