抗酸剂是碱性的，通过中和胃容物中的酸来减轻疼痛。Antacids are alkaline and they relieve pain by neutralizing acid in the contents of the stomach.这种水呈强碱性的.This water is strongly alkaline.不正碱性的纸张, 其本质是恒定的, 不常无法矫侧.Acid paper, its nature is constant...
所有颜色都会褪色——尤其是在阳光直射下。All colour fades— especially under the impact of direct sunlight.它们能够经受极端的气温和天气状况而不褪色、不破裂。They can withstand extremes of temperature and weather without fading or cracking.有些图片褪色严重。Some of the prints ...
细胞的这种向里推进标志着原肠胚形成的开始.This pushing - in of cells marks the start of gastrulation.外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.The outer layer of a blastula that gives rise to the ectoderm after gastrulation....
Association of Principal and Senior Assistant Masters and Mistresses of Education Department.香港教育学院讲师协会.The mistresses of the two neighboring houses made a scene over some trifles.相邻两所屋子的主妇为了点小事吵了一场....