| 例句 |
Now women work both before and after having their children.现在妇女在生孩子前后都要去工作。We have experimental and observational evidence concerning things which happened before and after the origin of life.有关生命起源前后发生了什么，我们通过实验和观察得出了一些证据。Remember to drink plenty of water before and after you exercise.运动开始前和结束后，记得要多喝水。Raw eggs are highly perishable and must be chilled before and after cooking.生鸡蛋极容易变质，生熟都必须冷藏。 |