便秘时可服用泻剂.If you're constipated you may need a laxative.酒石酸及其钾盐是有渗透作用的泻剂.Sodium potassium tartrate and tartaric acid are osmotic laxatives.您需要服食泻剂来驱使肠胃的蠕动?Do you depend on laxatives to ease your bowel movements?...
Mankind's knowledge of the universe has increased beyond measure.人类对于宇宙的了解已经大为增加。His research is for the betterment of mankind.他的研究是为全人类造福。the history of mankind人类的历史...