The passengers were rescued from the boat before it sank.乘客们在船沉没以前获救了。The boat sank without a trace.那艘船沉没了,没有留下一丝踪迹。It seemed as though the ship had sunk without trace.那艘船沉没后似乎没有留下一丝痕迹。The collision foundered the boat.碰撞使小船沉没了。Hundreds perished when the ship went down.轮船沉没,数百人罹难。