The telephone started drilling all of a sudden . 电话突然嗡嗡响起来。
2.
His group plans to start drilling in a few days and descend 50 metres in the next few weeks ; to drop 50 metres more next year ; and finally take the plunge into the lake in 2007 他的团队计画几天内开始钻孔并在未来几周内向下50公尺，明年再50公尺，终将在2007年冒险进入湖中。
