许多医生推荐含有丰富食物纤维的天然食物，因为它有助于防止便秘，以取代万不得已而使用的泻药。原因显而易见－治病总是不如防病。 Many doctors prefer a natural food, rich in dietary fibre, which will help you to avoid constipation, rather than having to resort to purgatives. The reason is obvious-prevention is always better than cure.
这婴儿患便秘。 The baby is constipated.
便秘时可服用泻剂。 If you're constipated you may need a laxative.
假若便秘就应该多吃粗糙食物。 If you're constipated you should eat more roughage.
