这种微酸的味道是因为含有乳酸造成的。The somewhat acid flavour is caused by the presence of lactic acid.乳酸是一种具有重要工业价值的有机酸。Lactic acid is an important organic acid of industrial importance.乳酸细菌产生的酸足以使乳蛋白质凝固.Acid production of lactic acid ba...
Luke sat directly behind the pilot and conversed with him...卢克就坐在飞行员后面，并且和他说着话。'Have you finished with me?' Luke asked, when he had listened to Armstrong's report of his evidence.“你已经都问完我了吗?”卢克听完阿姆斯特朗向自己重述...
在古代，狗也与治病有关。Dogs were also associated with healing in the ancient world.铅是早在古代就已知的金属之一。Lead was one of the metals known to the ancient world.有一些湿地在古代就形成了。There are some areas of wetland which are of ancient origin....