Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前,务必要关上电源,关好窗户。
We are trying to collect money for a wildlife project.
我们正在设法募集资金搞一个野生动物项目。
Perhaps in those days I was. Pierre and I did have a very good time at the ball. But that was the last moment of happiness in our lives. That night everything changed.