If a vehicle ploughs into something or someone, it hits the object or person with great force.

Many people were injured when the train came off the rails and ploughed into the bank. 当火车冲出铁轨撞上斜坡时，很多人受了伤。

to invest money (= give money hoping to get more back) in a business, especially to help make it successful or to make more money

They ploughed all their savings into their daughter's business. 他们将所有的积蓄都投到了女儿的生意里。